0001585521-19-000020 | 10-Q | XBRL Viewer | Zoom Video Communications INC

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Cover - shares	6 Months Ended
Cover - shares	Jul. 31, 2019	Aug. 23, 2019
Entity Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jul. 31, 2019
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q2
Entity Registrant Name	Zoom Video Communications, Inc.
Entity Central Index Key	0001585521
Current Fiscal Year End Date	--01-31
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	true
Entity Shell Company	false
Entity Current Reporting Status	Yes
Class A Common Stock
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		56,887,819
Class B Common Stock
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		216,664,088

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jul. 31, 2019	Jan. 31, 2019
Current assets:
Cash and cash equivalents	$ 213,886	$ 63,624
Marketable securities	541,380	112,777
Accounts receivable, net of allowances of $4,401 and $2,071 as of July 31, 2019 and January 31, 2019, respectively	95,682	63,613
Accounts receivable, allowances	4,401	2,071
Deferred contract acquisition costs, current	35,502	26,453
Prepaid expenses and other current assets	29,609	10,252
Total current assets	916,059	276,719
Deferred contract acquisition costs, non-current	37,688	29,063
Property and equipment, net	51,987	37,275
Operating lease right-of-use assets	51,126
Other assets, non-current	13,063	11,508
Total assets	1,069,923	354,565
Current liabilities:
Accounts payable	819	4,963
Accrued expenses and other current liabilities	64,586	32,256
Deferred revenue, current	163,591	115,122
Total current liabilities	228,996	152,341
Deferred revenue, non-current	17,816	10,651
Operating lease liabilities, non-current	48,104
Other liabilities, non-current	31,211	39,460
Total liabilities	326,127	202,452
Commitments and contingencies (Note 8)
Stockholders’ equity (deficit):
Preferred stock	$ 0	$ 0
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	200,000,000	0
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, $0.001 par value per share, 2,000,000,000 and 320,000,000 Class A shares authorized as of July 31, 2019 and January 31, 2019, respectively; 49,867,103 and zero shares issued and outstanding as of July 31, 2019 and January 31, 2019, respectively; 300,000,000 Class B shares authorized as of July 31, 2019 and January 31, 2019; 223,619,064 and 90,327,435 shares issued and outstanding as of July 31, 2019 and January 31, 2019, respectively	$ 272	$ 89
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Additional paid-in capital	$ 760,990	$ 17,760
Accumulated other comprehensive loss	(68)	(135)
Accumulated deficit	(17,398)	(25,153)
Total stockholders’ equity (deficit)	743,796	(7,439)
Total liabilities, convertible preferred stock, and stockholders’ equity (deficit)	1,069,923	354,565
Convertible Preferred Stock
Stockholders’ equity (deficit):
Preferred stock	$ 0	$ 159,552
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	0	158,104,540
Preferred stock, shares issued (in shares)	0	152,665,804
Preferred stock, shares outstanding (in shares)	0	152,665,804
Class A Common Stock
Stockholders’ equity (deficit):
Common stock, shares authorized (in shares)	2,000,000,000	320,000,000
Common stock, shares issued (in shares)	49,867,103	0
Common stock, shares outstanding (in shares)	49,867,103	0
Class B Common Stock
Stockholders’ equity (deficit):
Common stock, shares authorized (in shares)	300,000,000	300,000,000
Common stock, shares issued (in shares)	223,619,064
Common stock, shares outstanding (in shares)	223,619,064	90,327,435

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2019	Jul. 31, 2018
Income Statement [Abstract]
Revenue	$ 145,826	$ 74,526	$ 267,814	$ 134,596
Cost of revenue	27,900	12,973	52,004	24,633
Gross profit	117,926	61,553	215,810	109,963
Operating expenses:
Research and development	15,054	7,049	28,837	13,313
Sales and marketing	79,652	41,054	143,693	77,315
General and administrative	20,955	10,028	39,458	17,597
Total operating expenses	115,661	58,131	211,988	108,225
Income from operations	2,265	3,422	3,822	1,738
Interest income, net	2,864	463	3,522	899
Other income, net	1,628	81	1,943	86
Net income before provision for income taxes	6,757	3,966	9,287	2,723
Provision for income taxes	(1,216)	(141)	(1,532)	(238)
Net income	5,541	3,825	7,755	2,485
Undistributed earnings attributable to participating securities	(20)	(3,329)	(2,794)	(2,485)
Net income attributable to common stockholders	$ 5,521	$ 496	$ 4,961	$ 0
Earnings Per Share [Abstract]
Basic (in dollars per share)	$ 0.02	$ 0.01	$ 0.03	$ 0.00
Diluted (in dollars per share)	$ 0.02	$ 0.00	$ 0.02	$ 0.00
Weighted-average shares used in computing net income per share attributable to common stockholders:
Basic (in shares)	271,813,141	83,330,741	192,130,510	81,999,734
Diluted (in shares)	292,185,665	108,454,323	215,774,619	107,584,379

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2019	Jul. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 5,541	$ 3,825	$ 7,755	$ 2,485
Other comprehensive (loss) gain:
Unrealized (loss) gain on available for sale marketable securities, net of tax	(76)	139	67	57
Comprehensive income	$ 5,465	$ 3,964	$ 7,822	$ 2,542

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details

CONDENSED CONSOLIDATED STATEMENTS OF CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY (DEFICIT) - USD ($) $ in Thousands	Total	Convertible Preferred Stock	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Beginning balance (in shares) at Jan. 31, 2018		152,665,804	82,609,638
Beginning balance at Jan. 31, 2018	$ (26,671)	$ 159,552	$ 80	$ 6,517	$ (531)	$ (32,737)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)			3,786,375
Issuance of common stock upon exercise of stock options	676		$ 4	672
Stock-based compensation expense	1,975			1,975
Other comprehensive income (loss)	57				57
Net income	2,485					2,485
Ending balance (in shares) at Jul. 31, 2018		152,665,804	86,396,013
Ending balance at Jul. 31, 2018	(21,478)	$ 159,552	$ 84	9,164	(474)	(30,252)
Beginning balance (in shares) at Apr. 30, 2018		152,665,804	83,122,778
Beginning balance at Apr. 30, 2018	(27,006)	$ 159,552	$ 81	7,603	(613)	(34,077)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)			3,273,235
Issuance of common stock upon exercise of stock options	438		$ 3	435
Stock-based compensation expense	1,126			1,126
Other comprehensive income (loss)	139				139
Net income	3,825					3,825
Ending balance (in shares) at Jul. 31, 2018		152,665,804	86,396,013
Ending balance at Jul. 31, 2018	(21,478)	$ 159,552	$ 84	9,164	(474)	(30,252)
Beginning balance (in shares) at Jan. 31, 2019		152,665,804	90,327,435
Beginning balance at Jan. 31, 2019	(7,439)	$ 159,552	$ 89	17,760	(135)	(25,153)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Conversion of convertible preferred stock to common stock upon initial public offering (in shares)		(152,665,804)	152,665,804
Conversion of convertible preferred stock to common stock upon initial public offering	159,552	$ (159,552)	$ 153	159,399
Conversion of convertible promissory notes and accrued interest to common stock upon initial public offering (in shares)			426,223
Conversion of convertible promissory notes and accrued interest to common stock upon initial public offering	15,344			15,344
Issuance of common stock upon initial public offering and private placement net of underwriting discounts and commissions and other offering costs (in shares)			15,819,646
Issuance of common stock upon initial public offering and private placement, net of underwriting discounts and commissions and other offering costs	$ 541,499		$ 16	541,483
Issuance of common stock upon exercise of stock options (in shares)	14,272,059
Issuance of common stock upon exercise of stock options, net of repurchases (in shares)			13,747,059
Issuance of common stock upon exercise of stock options	$ 2,174		$ 14	2,160
Issuance of common stock reserved for charitable donation (in shares)			500,000
Issuance of common stock reserved for charitable donation	0
Stock-based compensation expense	24,844			24,844
Other comprehensive income (loss)	67				67
Net income	7,755					7,755
Ending balance (in shares) at Jul. 31, 2019		0	273,486,167
Ending balance at Jul. 31, 2019	743,796	$ 0	$ 272	760,990	(68)	(17,398)
Beginning balance (in shares) at Apr. 30, 2019		0	272,336,862
Beginning balance at Apr. 30, 2019	719,728	$ 0	$ 271	742,388	8	(22,939)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)			649,305
Issuance of common stock upon exercise of stock options	421		$ 1	420
Issuance of common stock reserved for charitable donation (in shares)			500,000
Issuance of common stock reserved for charitable donation	0
Stock-based compensation expense	18,182			18,182
Other comprehensive income (loss)	(76)				(76)
Net income	5,541					5,541
Ending balance (in shares) at Jul. 31, 2019		0	273,486,167
Ending balance at Jul. 31, 2019	$ 743,796	$ 0	$ 272	$ 760,990	$ (68)	$ (17,398)

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOW - USD ($) $ in Thousands	6 Months Ended
	Jul. 31, 2019	Jul. 31, 2018
Cash flows from operating activities:
Net income	$ 7,755	$ 2,485
Adjustments to reconcile net income to net cash provided by operating activities:
Stock-based compensation expense	24,737	1,975
Amortization of deferred contract acquisition costs	16,026	8,647
Depreciation and amortization	7,174	2,618
Amortization of operating lease right-of-use assets	3,116	0
Provision for accounts receivable allowances	2,693	1,056
Other	(514)	38
Changes in operating assets and liabilities:
Accounts receivable	(35,361)	(22,600)
Prepaid expenses and other assets	(23,597)	(4,132)
Deferred contract acquisition costs	(33,700)	(22,768)
Accounts payable	(2,783)	(206)
Accrued expenses and other liabilities	34,923	14,561
Deferred revenue	56,234	35,436
Operating lease liabilities, net	(3,295)	0
Net cash provided by operating activities	53,408	17,110
Cash flows from investing activities:
Purchases of marketable securities	(478,487)	(30,276)
Maturities of marketable securities	50,940	23,755
Purchases of property and equipment	(20,937)	(10,027)
Net cash used in investing activities	(448,484)	(16,548)
Cash flows from financing activities:
Proceeds from initial public offering and private placement, net of underwriting discounts and commissions and other offering costs	542,947	0
Proceeds from exercise of stock options, net of repurchases	2,191	576
Principal payments on capital lease obligations	0	(92)
Net cash provided by financing activities	545,138	484
Net increase in cash, cash equivalents, and restricted cash	150,062	1,046
Cash, cash equivalents, and restricted cash – beginning of period	65,968	36,821
Cash, cash equivalents, and restricted cash – end of period	216,030	37,867
Reconciliation of cash, cash equivalents, and restricted cash within the condensed consolidated balance sheets to the amounts shown in the condensed consolidated statements of cash flows above:
Cash and cash equivalents	213,886	36,492
Total cash, cash equivalents, and restricted cash	$ 216,030	$ 37,867

Summary of Business and Significant Accounting Policies	6 Months Ended
Summary of Business and Significant Accounting Policies	Jul. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Summary of Business and Significant Accounting Policies	Summary of Business and Significant Accounting Policies Description of Business Zoom Video Communications, Inc. and its subsidiaries (together, Zoom, the Company, we, us, or our) provide a video-first, unified communications platform. Our platform combines video, audio, phone, screen sharing, and chat functionalities. We were incorporated in the state of Delaware in April 2011 and are headquartered in San Jose, California. Fiscal Year Our fiscal year ends on January 31. References to fiscal 2020, for example, refer to the fiscal year ending January 31, 2020. Initial Public Offering and Private Placement On April 23, 2019, we completed our initial public offering (IPO), in which we issued and sold 9,911,434 shares of our Class A common stock at $36.00 per share, resulting in net proceeds of $340.8 million after deducting underwriting discounts and commissions. On April 18, 2019, the underwriters exercised their option to purchase an additional 3,130,435 shares of our Class A common stock at $36.00 per share. This transaction closed on April 23, 2019, resulting in additional proceeds of $107.1 million, net of underwriters' discounts and commissions. In connection with the IPO: •all of the shares of convertible preferred stock outstanding automatically converted into an aggregate of 152,665,804 shares of Class B common stock; •outstanding convertible promissory notes and accrued interest automatically converted into 426,223 shares of Class A common stock based on the IPO price of $36.00 per share; and •Salesforce Ventures LLC purchased 2,777,777 shares of Class A common stock from us at $36.00 per share in a concurrent private placement. We received aggregate proceeds of $100.0 million and did not pay any underwriting discounts or commissions with respect to the shares of Class A common stock that were sold in this private placement. Deferred offering costs consist primarily of accounting, legal, and other fees related to our IPO. Prior to the IPO, all deferred offering costs were capitalized in other assets, non-current in the condensed consolidated balance sheets. After the IPO, $6.4 million of deferred offering costs were reclassified into stockholders’ equity as a reduction of the IPO proceeds in the condensed consolidated balance sheets. We capitalized $2.4 million of deferred offering costs within other assets, non-current in the condensed consolidated balance sheet as of January 31, 2019. Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (GAAP) and applicable regulations of the Securities and Exchange Commission (SEC) regarding interim financial reporting, and include the accounts of Zoom Video Communications, Inc. and its subsidiaries. All intercompany balances and transactions have been eliminated in consolidation. The unaudited condensed consolidated balance sheet as of January 31, 2019 included herein was derived from the audited financial statements as of that date, but does not include all disclosures including certain notes required by GAAP on an annual reporting basis. The unaudited condensed consolidated financial statements reflect all normal recurring adjustments necessary to present fairly the balance sheets, statements of operations, statements of comprehensive income, statements of convertible preferred stock and stockholders’ equity (deficit), and statements of cash flows for the interim periods, but are not necessarily indicative of the results of operations to be anticipated for the full fiscal year or any future period. The unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes included in our final prospectus dated April 17, 2019 (Prospectus) filed with the SEC pursuant to Rule 424(b) under the Securities Act of 1933, as amended. Use of Estimates The preparation of condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates. Significant items subject to such estimates and assumptions include, but are not limited to, the estimated expected benefit period for deferred contract acquisition costs, the accounts receivable allowances, the useful lives of long-lived assets, the incremental borrowing rate for operating leases, the valuation of derivative liabilities, the value of common stock and other assumptions used to measure stock-based compensation expense, sales and other tax liabilities, the valuation of deferred income tax assets and uncertain tax positions. Actual results could differ from those estimates. Summary of Significant Accounting Policies Our significant accounting policies are discussed in Note 1. “Summary of Business and Significant Accounting Policies” in the Notes to Consolidated Financial Statements in our Prospectus. There have been no significant changes to these policies during the six months ended July 31, 2019, except as noted below. Leases All significant lease arrangements are generally recognized at lease commencement. Operating lease right-of-use (ROU) assets and operating lease liabilities are recognized at commencement. For short term leases (an initial term of 12 months or less), a ROU asset and corresponding lease liability are not recorded and we record rent expense in our condensed consolidated statements of operations on a straight-line basis over the lease term and record variable lease payments as incurred. ROU assets represent our right to use an underlying asset during the reasonably certain lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Our lease terms may include options to extend or terminate the lease when it is reasonably certain that we will exercise that option. Operating lease ROU assets and liabilities are recognized at commencement date based on the present value of fixed payments not yet paid over the lease term. We use our incremental borrowing rate based on the information available at the commencement date in determining the lease liabilities as our leases generally do not provide an implicit rate. ROU assets also include any initial direct costs incurred and any lease payments made at or before the lease commencement date, less lease incentives received. We currently do not have any finance leases. Recent Accounting Pronouncements Not Yet Adopted In June 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2016-13 (Topic 326), Financial Instruments – Credit Losses: Measurement of Credit Losses on Financial Instruments, which replaces the existing incurred loss impairment model with an expected credit loss model and requires a financial asset measured at amortized cost to be presented at the net amount expected to be collected. The guidance will be effective for fiscal years beginning after December 15, 2019 and interim periods within those fiscal years. Early adoption is permitted. We are currently evaluating whether the adoption of this standard will have a material impact on our condensed consolidated financial statements. Recently Adopted Accounting Pronouncements In February 2016, the FASB issued ASU No. 2016-2 (Topic 842), Leases (ASU 2016-2), which supersedes FASB ASC Topic 840, Leases (ASC 840), and makes other conforming amendments to GAAP. ASU 2016-2 requires, among other changes to the lease accounting guidance, lessees to recognize most leases on-balance sheet via a right-of-use asset and lease liability, and additional qualitative and quantitative disclosures. ASU 2016-2 is effective for the annual periods in fiscal years beginning after December 15, 2018, and interim periods therein. We adopted the standard as of February 1, 2019 using the modified retrospective method of applying the new standard at the adoption date. Under this approach, we will continue to report comparative periods presented in the period of adoption under ASC 840. We have elected the package of practical expedients permitted under the transition guidance within the new standard, which allows us to (1) carry forward the historical lease classification, (2) not reassess whether any expired or existing contracts contain leases, and (3) not reassess indirect costs for any existing leases. This election allows us to account for lease components (e.g., fixed payments or variable payments that depend on a rate that can be determined at commencement, including rent for the right to use the asset) together with nonlease components (e.g., other fixed payments that deliver a good or service including common-area maintenance costs) in the calculation of the right-of-use asset and corresponding liability. Adoption of this standard resulted in the recording of ROU assets and total liabilities of $40.5 million and $43.0 million, respectively, with no material impact on retained earnings as of February 1, 2019. See Note 7 for further details. In June 2018, the FASB issued ASU No. 2018-7, Improvements to Nonemployee Share-Based Payment Accounting (ASU 2018-7). The standard simplifies the accounting for share-based payments granted to nonemployees for goods and services and aligns most of the guidance on such payments to nonemployees with the requirements for share-based payments granted to employees. ASU 2018-7 is effective for the annual periods in fiscal years beginning after December 15, 2018, and interim periods therein, using a modified retrospective approach. We adopted ASU 2018-7 as of February 1, 2019, and our adoption did not have a material impact on the condensed consolidated financial statements. In August 2018, the FASB issued ASU No. 2018-13 (Topic 820), Fair Value Measurement: Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement (ASU 2018-13). The standard no longer requires disclosure of the amount and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy, however public companies will be required to disclose the range and weighted-average used to develop significant unobservable inputs for Level 3 fair value measurements. ASU 2018-13 is effective for the annual periods in fiscal years beginning after December 15, 2019, and interim periods therein, with early adoption permitted. We adopted ASU 2018-13 as of February 1, 2019, and our adoption did not have a material impact on the condensed consolidated financial statements.

Revenue Recognition

6 Months Ended

Jul. 31, 2019

Revenue from Contract with Customer [Abstract]

Revenue Recognition

Disaggregation of Revenue

The following table summarizes revenue by region based on the billing address of customers:


	Three Months Ended July 31,														Six Months Ended July 31,
	2019						2018						2019				2018
	Amount		Percentage of Revenue		Amount		Percentage of Revenue		Amount		Percentage of Revenue		Amount		Percentage of Revenue

	(in thousands, except percentages)
Americas	$	117,098	80	%	$	61,155	82	%	$	215,258	80	%	$	110,715	82	%
Asia Pacific (APAC)	12,088		8		6,078		8		22,529		9		10,820		8
Europe, Middle East, and Africa (EMEA)	16,640		12		7,293		10		30,027		11		13,061		10
Total	$	145,826	100	%	$	74,526	100	%	$	267,814	100	%	$	134,596	100	%

Contract Balances

We receive payments from customers based on a billing schedule as established in our customer contracts. Accounts receivable are recorded when we contractually have the right to consideration. In some arrangements, a right to consideration for our performance under the customer contract may occur before invoicing to the customer, resulting in an unbilled accounts receivable. The amount of unbilled accounts receivable included within accounts receivable, net on the condensed consolidated balance sheets was $8.5 million and $7.2 million as of July 31, 2019 and January 31, 2019, respectively.

Contract liabilities consist of deferred revenue. Revenue is deferred when we have the right to invoice in advance of performance under a customer contract. The current portion of deferred revenue balances are recognized over the next 12 months. The amount of revenue recognized during the three months ended July 31, 2019 and 2018 that was included in deferred revenue at the beginning of each period was $64.6 million and $30.6 million, respectively, and $90.7 million and $38.9 million during the six months ended July 31, 2019 and 2018, respectively.

Remaining Performance Obligation

The terms of our subscription agreements are monthly, annual, and multi-year, and we may bill for the full term in advance or on an annual or monthly basis, depending on the customer preference. As of July 31, 2019, the aggregate amount of the transaction price allocated to remaining performance obligations was $457.6 million, which consists of both billed consideration in the amount of $181.4 million and unbilled consideration in the amount of $276.2 million that we expect to recognize as revenue. We expect to recognize 62% of our remaining performance obligations as revenue over the next 12 months, and the remainder thereafter.

Cash Equivalents and Marketable Securities

6 Months Ended

Jul. 31, 2019

Cash Equivalents And Marketable Securities [Abstract]

Cash Equivalents and Marketable Securities

As of July 31, 2019 and January 31, 2019, our cash equivalents and marketable securities consisted of the following:


	July 31, 2019
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value

	(in thousands)
Money market funds	$	95,577	$	—	$	—	$	95,577
Commercial paper	14,239		—		—		14,239
Corporate debt securities	4,900		—		—		4,900
Treasury bills	19,485		2		—		19,487
Cash equivalents	134,201		2		—		134,203
Commercial paper	54,007		—		—		54,007
Agency bonds	18,399		9		(9)		18,399
Corporate and other debt securities	269,376		125		(292)		269,209
U.S. government agency securities	97,709		68		(15)		97,762
Treasury bills	101,959		44		—		102,003
Marketable securities	$	541,450	$	246	$	(316)	$	541,380


	January 31, 2019
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value

	(in thousands)
Money market funds	$	78	$	—	$	—	$	78
Cash equivalents	78		—		—		78
Commercial paper	1,243		—		—		1,243
Corporate bonds	53,267		—		(53)		53,214
Agency bonds	32,675		—		(71)		32,604
U.S. government agency securities	24,028		—		(11)		24,017
Treasury bills	1,699		—		—		1,699
Marketable securities	$	112,912	$	—	$	(135)	$	112,777

We review the individual securities that have unrealized losses on a regular basis to evaluate whether or not any security has experienced an other-than-temporary decline in fair value. We evaluate, among other factors, whether we have the intention to sell any of these marketable securities and whether it is more likely than not that we will be required to sell any of them before recovery of the amortized cost basis. Based on the available evidence, we concluded that the gross unrealized losses on the marketable securities as of July 31, 2019 and January 31, 2019, are temporary in nature. There were no material realized gains or losses from available-for-sale securities that were reclassified out of accumulated other comprehensive loss for the three and six months ended July 31, 2019 and 2018.

The following table presents the contractual maturities of our marketable securities as of July 31, 2019 and January 31, 2019:


	As of
	July 31, 2019		January 31, 2019

	(in thousands)
Less than one year	$	421,166	$	85,077
Due in one to five years	120,214		27,700
Total	$	541,380	$	112,777

Fair Value Measurements

6 Months Ended

Jul. 31, 2019

Fair Value Disclosures [Abstract]

Fair Value Measurements

The following table presents information about our financial instruments that are measured at fair value on a recurring basis using the input categories further discussed in Note 1. “Summary of Business and Significant Accounting Policies” in the Notes to Consolidated Financial Statements in our Prospectus:


	July 31, 2019
	Fair Value		Level 1		Level 2		Level 3

	(in thousands)
Financial Assets:
Money market funds	$	95,577	$	95,577	$	—	$	—
Commercial paper	14,239		—		14,239		—
Corporate debt securities	4,900		—		4,900		—
Treasury bills	19,487		—		19,487		—
Cash equivalents	134,203		95,577		38,626		—
Commercial paper	54,007		—		54,007		—
Agency bonds	18,399		—		18,399		—
Corporate and other debt securities	269,209		—		269,209		—
U.S. government agency securities	97,762		—		97,762		—
Treasury bills	102,003		—		102,003		—
Marketable securities	541,380		—		541,380		—
Certificate of deposit	100		—		100		—
Prepaid expenses and other current assets	100		—		100		—
Certificates of deposit	2,044		—		2,044		—
Other assets, non-current	2,044		—		2,044		—
Total financial assets	$	677,727	$	95,577	$	582,150	$	—


	January 31, 2019
	Fair Value		Level 1		Level 2		Level 3

	(in thousands)
Financial Assets:
Money market funds	$	78	$	78	$	—	$	—
Cash equivalents	78		78		—		—
Commercial paper	1,243		—		1,243		—
Corporate bonds	53,214		—		53,214		—
Agency bonds	32,604		—		32,604		—
U.S. government agency securities	24,017		—		24,017		—
Treasury bills	1,699		—		1,699		—
Marketable securities	112,777		—		112,777		—
Certificate of deposit	200		—		200		—
Prepaid expenses and other current assets	200		—		200		—
Certificates of deposit	2,144		—		2,144		—
Other assets, non-current	2,144		—		2,144		—
Total financial assets	$	115,199	$	78	$	115,121	$	—
Financial Liabilities:
Convertible promissory notes – derivative liabilities	$	163	$	—	$	—	$	163
Other liabilities, non-current	163		—		—		163
Total financial liabilities	$	163	$	—	$	—	$	163

We classify our highly liquid money market funds within Level 1 of the fair value hierarchy because they are valued based on quoted market prices in active markets. We classify our commercial paper, agency bonds, corporate bonds, corporate debt securities, U.S. government agency securities, treasury bills, and certificates of deposit within Level 2 because they are valued using inputs other than quoted prices which are directly or indirectly observable in the market, including readily-available pricing sources for the identical underlying security which may not be actively traded. We classify the derivative liabilities as Level 3 due to the lack of relevant observable market data over fair value inputs such as the probability-weighting of the various scenarios that can impact settlement of the arrangement.

As discussed in Note 6 below, in connection with the IPO, the fair value of our derivative liabilities associated with our convertible promissory notes were extinguished. The following table sets forth a summary of the changes in the fair value of our Level 3 financial instruments as follows:


	Derivative Liabilities
	(in thousands)
Balance - January 31, 2019	$	163
Extinguishment of derivative liabilities from the convertible promissory notes in connection with the IPO	(163)
Balance - July 31, 2019	$	—

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Balance Sheet Components

6 Months Ended

Jul. 31, 2019

Balance Sheet Components [Abstract]

Balance Sheet Components

Property and Equipment, Net

Property and equipment consisted of the following:


	As of
	July 31, 2019		January 31, 2019

	(in thousands)
Computer and office equipment	$	43,877	$	32,515
Leasehold improvements	15,290		7,660
Software	7,941		6,575
Furniture and fixtures	3,458		1,993
Property and equipment, gross	70,566		48,743
Less: accumulated depreciation and amortization	(18,579)		(11,468)
Property and equipment, net	$	51,987	$	37,275

Depreciation and amortization expense was $3.8 million and $1.5 million for the three months ended July 31, 2019 and 2018, respectively, and $7.2 million and $2.6 million for the six months ended July 31, 2019 and 2018, respectively.

Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consisted of the following:


	As of
	July 31, 2019		January 31, 2019

	(in thousands)
Accrued compensation and benefits	$	30,339	$	12,004
Accrued expenses	20,092		13,596
Operating lease liabilities, current	5,277		—
Sales and other tax liabilities	2,440		1,183
Liability for early exercise of common stock options	1,797		1,781
Other	4,641		3,692
Accrued expenses and other current liabilities	$	64,586	$	32,256

Other Liabilities, Non-Current

Other liabilities, non-current consisted of the following:


	As of
	July 31, 2019		January 31, 2019

	(in thousands)
Sales and other tax liabilities	$	29,182	$	20,817
Convertible promissory notes, net of debt discount	—		14,858
Deferred rent liabilities	—		2,314
Derivative liabilities	—		163
Other	2,029		1,308
Other liabilities, non-current	$	31,211	$	39,460

Commitment and Contingencies	6 Months Ended
Commitment and Contingencies	Jul. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies Disclosure	Commitments and ContingenciesOur platform and associated products are subject to various restrictions under U.S. export control and sanctions laws and regulations, including the U.S. Department of Commerce’s Export Administration Regulations (EAR) and various economic and trade sanctions regulations administered by the U.S. Treasury Department’s Office of Foreign Assets Controls (OFAC). The U.S. export control laws and U.S. economic sanctions laws include restrictions or prohibitions on the sale or supply of certain products and services to U.S. embargoed or sanctioned countries, governments, persons and entities, and also require authorization for the export of certain encryption items. In addition, various countries regulate the import of certain encryption technology, including through import permitting and licensing requirements and have enacted or could enact laws that could limit our ability to distribute our platform or could limit our hosts’ ability to implement our platform in those countries.Although we take precautions to prevent our platform and associated products from being accessed or used in violation of such laws, we have inadvertently allowed our platform and associated products to be accessed or used by some customers in apparent violation of U.S. economic sanction laws. In addition, we may have inadvertently made our software products available to some customers, including users in embargoed or sanctioned countries, in apparent violation of the EAR. As a result, we have submitted initial and final voluntary self-disclosures concerning potential violations of U.S. sanctions and export control laws and regulations to the OFAC and the U.S. Department of Commerce’s Bureau of Industry and Security (BIS). As of July 31, 2019, OFAC and BIS issued us warning letters as their final enforcement responses to these potential violations but no fines or penalties were assessed. If we are found to be in violation of U.S. economic sanctions or export control laws in the future, it could result in fines and penalties.

Convertible Promissory Notes	6 Months Ended
Convertible Promissory Notes	Jul. 31, 2019
Debt Disclosure [Abstract]
Debt Disclosure	Convertible Promissory Notes In October 2018, we entered into a strategic partnership with Dropbox, Inc. (Dropbox), a global collaboration platform company, which involves the development of technology enabling integrated workflows for users between our platform and the Dropbox platform, as well as a strategic partnership with Atlassian, Inc. (Atlassian), a collaboration software company, which involves the development of technology enabling integrated workflows for users between our platform and Atlassian’s Jira Ops and Jira Service Desk products. As part of the strategic partnerships, we issued unsecured three-year convertible promissory notes in the principal amounts of $5.0 million and $10.0 million to Dropbox and Atlassian, respectively, which accrue simple interest at 2.75% and 5.0% per annum, respectively. Both convertible promissory notes are collectively referred to as “the convertible notes” throughout the notes to the condensed consolidated financial statements, unless otherwise stated. The terms of the convertible notes provided that they would automatically convert into shares of Class A common stock upon an IPO at a conversion price equal to the IPO price. In connection with the IPO, the convertible notes and accrued interest automatically converted into 426,223 shares of Class A common stock based on the IPO price of $36.00 per share. As a result of the conversion, the related $0.2 million derivative liabilities and the $0.1 million unamortized debt discount of the convertible notes were recognized in other income, net and interest income, net, respectively, on the condensed consolidated statements of operations during the six months ended July 31, 2019.

Operating Leases

6 Months Ended

Jul. 31, 2019

Leases [Abstract]

Operating Leases

We have entered into various operating lease agreements for office space, with remaining contractual periods of up to 10 years. Many of our leases contain one or more options to extend. As leases approach maturity, we consider various factors such as market conditions and the terms of any renewal options that may exist to determine whether we will renew the lease. Operating lease expense for the three and six months ended July 31, 2019 was $2.5 million and $4.9 million, respectively, including short-term lease expense of $0.3 million and $0.5 million, respectively.

Supplemental balance sheet information as of July 31, 2019, related to operating leases was as follows:


	As of July 31, 2019
	(in thousands)
Reported as:
Assets:
Operating lease right-of-use assets	$	51,126
Liabilities:
Accrued expenses and other current liabilities	$	5,277
Operating lease liabilities, non-current	48,104
Total operating lease liabilities	$	53,381

As of July 31, 2019, the weighted-average remaining lease term is 7.2 years and the weighted-average discount rate is 5.1%.

Supplemental cash flow and other information for the six months ended July 31, 2019, related to operating leases was as follows:


	Six Months Ended July 31, 2019
	(in thousands)
Cash paid within operating cash flows	$	4,446
Operating lease right-of-use assets recognized in exchange for new operating lease obligations	$	13,770

As of July 31, 2019, the future minimum lease payments included in the measurement of our operating lease liabilities are as follows:


	As of July 31, 2019
	(in thousands)
Year Ending January 31,
2020	$	3,725
2021	8,249
2022	7,916
2023	7,954
2024	7,543
Thereafter	30,551
Total operating lease payments	$	65,938
Less: imputed interest	(12,557)
Total operating lease liabilities	$	53,381

As of July 31, 2019, we have additional operating leases for office space that have not yet commenced with undiscounted cash flows of $25.5 million. These operating leases will commence between 2019 and 2020.

As previously disclosed in "Note 6. Commitments and Contingencies" to Notes to Consolidated Financial Statements in our Prospectus and under the previous lease accounting standard, future minimum payments related to operating leases as of January 31, 2019 are as follows:


	As of January 31, 2019
	(in thousands)
Year Ending January 31,
2020	$	7,609
2021	7,837
2022	7,888
2023	7,514
2024	7,174
Thereafter	18,635
Total future minimum payments	$	56,657

Rent expense during the three and six months ended July 31, 2018 was $1.6 million and $3.0 million, respectively.

Schedule of Supplemental Balance Sheet Information

Supplemental balance sheet information as of July 31, 2019, related to operating leases was as follows:


	As of July 31, 2019
	(in thousands)
Reported as:
Assets:
Operating lease right-of-use assets	$	51,126
Liabilities:
Accrued expenses and other current liabilities	$	5,277
Operating lease liabilities, non-current	48,104
Total operating lease liabilities	$	53,381

Convertible Preferred Stock, Stockholders’ Equity (Deficit) and Equity Incentive Plan

6 Months Ended

Jul. 31, 2019

Stockholders' Equity Note [Abstract]

Convertible Preferred Stock, Stockholders’ Equity (Deficit) and Equity Incentive Plan

Convertible Preferred Stock

Upon completion of the IPO, all shares of convertible preferred stock outstanding, totaling 152,665,804 shares, were automatically converted into an equivalent number of shares of Class B common stock on a one-to-one basis and their carrying value of $159.6 million was reclassified into stockholders’ equity. As of July 31, 2019, there were no shares of convertible preferred stock issued and outstanding.

In connection with the IPO, our Amended and Restated Certificate of Incorporation (COI) became effective, which authorized the issuance of 200,000,000 shares of undesignated preferred stock with a par value of $0.001 with rights and preferences, including voting rights, designated from time to time by our board of directors.

Common Stock

Our Amended and Restated COI also authorized the issuance of 2,000,000,000 shares of Class A common stock, $0.001 par value per share and 300,000,000 shares of Class B common stock, $0.001 par value per share. Class A and Class B common stock are referred to as common stock throughout the notes to the condensed consolidated financial statements, unless otherwise noted.

Equity Incentive Plans

In 2011, we adopted the 2011 Global Share Plan (2011 Plan), under which officers, employees, and consultants may be granted various forms of equity incentive compensation at the discretion of the board of directors, including stock options and restricted stock awards. The awards have varying terms, but generally vest over four years, and are issued at the Fair Market Value (as defined in the 2011 Plan) of the shares of common stock on the date of grant. Certain awards provide for accelerated vesting if there is a Change in Control (as defined in the 2011 Plan). As of January 31, 2019, our board of directors had authorized 71,240,000 shares of common stock to be reserved for grants of awards under the 2011 Plan. As of January 31, 2019, stock options covering 35,064,465 shares of our Class B common stock were outstanding and the remaining number of shares available for future issuance was 1,848,100 under the 2011 Plan. In connection with the IPO, the shares of Class B common stock remaining available for issuance under the 2011 Plan became available for issuance for a corresponding number of shares of our Class A common stock under the 2019 Equity Incentive Plan (2019 Plan).

In April 2019, we adopted the 2019 Plan, which is a successor to and continuation of our 2011 Plan. Our 2019 Plan provides for the grant of stock options, stock appreciation rights, restricted stock awards, restricted stock unit awards, performance awards, and other forms of awards. The maximum number of shares of our Class A common stock that may be issued under our 2019 Plan will not exceed 58,300,889 shares of our Class A common stock, which is the sum of (1) 34,000,000 new shares, plus (2) an additional number of shares not to exceed 24,300,889, consisting of (A) shares that remain available for the issuance of awards under our 2011 Plan as of immediately prior to the time our 2019 Plan becomes effective and (B) shares of Class B common stock subject to outstanding stock options or other stock awards granted under our 2011 Plan that, on or after the 2019 Plan becomes effective, terminate or expire prior to exercise or settlement; are not issued because the award is settled in cash; are forfeited because of the failure to vest; or are reacquired or withheld (or not issued) to satisfy a tax withholding obligation or the purchase or exercise price, if any, as such shares become available from time to time. In addition, the number of shares of our Class A common stock reserved for issuance under our 2019 Plan will automatically increase on February 1 of each calendar year, starting on February 1, 2020 through February 1, 2029, in an amount equal to (i) 5% of the total number of shares of our common stock (both Class A and Class B) outstanding on January 31 of the fiscal year before the date of each automatic increase, or (ii) a lesser number of shares determined by our board of directors prior to the applicable February 1.

Stock Options

A summary of stock option activity under our equity incentive plan and related information is as follows:


	Options Outstanding
	Outstanding Stock Options	Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Life (Years)	Aggregate Intrinsic Value

	(in thousands, except share, life, and per share data)
Outstanding as of January 31, 2019	35,064,465	$	1.48	6.8	$	534,572
Granted	1,537,900	36.77
Exercised	(14,272,059)	0.16
Canceled/forfeited/expired	(284,118)	6.11
Outstanding as of July 31, 2019	22,046,188	$	4.73	8.0	$	2,001,410
Vested as of July 31, 2019	8,692,345	$	1.02	7.1	$	821,380

As of July 31, 2019, unrecognized stock-based compensation expense related to outstanding unvested stock options was $94.3 million, which is expected to be recognized over a weighted-average period of 3.3 years.

Restricted Stock Units

A summary of restricted stock units (RSUs) activity under our equity incentive plan and related information is as follows:


	RSUs Outstanding
	Outstanding RSUs	Weighted- Average Grant Date Fair Value Per Share
Outstanding as of January 31, 2019	—	$	—
Granted	376,786	93.89

Canceled/forfeited	(5,926)	94.52
Outstanding as of July 31, 2019	370,860	$	93.88

As of July 31, 2019, unrecognized stock-based compensation expense related to outstanding unvested RSUs was $33.9 million, which is expected to be recognized over a weighted-average period of 3.9 years.

2019 Employee Stock Purchase Plan

In April 2019, we adopted the 2019 Employee Stock Purchase Plan (ESPP), which became effective in connection with the IPO. A total of 9,000,000 shares of our Class A common stock were initially reserved for issuance under the ESPP. The number of shares of our Class A common stock reserved for issuance will automatically increase on February 1 of each calendar year, beginning on February 1, 2020 through February 1, 2029, by the lesser of (1) 1% of the total number of shares of our common stock (both Class A and Class B) outstanding on the last day of the fiscal year before the date of the automatic increase, and (2) 7,500,000 shares; provided that before the date of any such increase, our board of directors may determine that such increase will be less than the amount set forth in clauses (1) and (2).

Generally, all regular employees, including executive officers, employed by us or by any of our designated affiliates, except for those holding 5% or more of the total combined voting power or value of all classes of our stock, may participate in the ESPP and may contribute, normally through payroll deductions, up to 20% of their earnings (as defined in the ESPP) for the purchase of our Class A common stock under the ESPP. Unless otherwise determined by our board of directors, Class A common stock will be purchased for the accounts of employees participating in the ESPP at a price per share that is at least the lesser of (1) 85% of the fair market value of a share of our Class A common stock on the first date of an offering, or (2) 85% of the fair market value of a share of our Class A common stock on the date of purchase. No employee may purchase shares under the ESPP at a rate in excess of $25,000 worth of our Class A common stock based on the fair market value per share of our Class A common stock at the beginning of an offering for each calendar year such purchase right is outstanding or 3,000 shares. The 2019 ESPP provides for, at maximum, 27 months offering periods with four offering dates, generally in June and

December of each year. The first offering period began on April 18, 2019. As of July 31, 2019, no shares of our Class A common stock have been purchased under the ESPP.

As of July 31, 2019, unrecognized stock-based compensation expense related to the ESPP was $78.5 million, which is expected to be recognized over a weighted-average period of 1.9 years.

No stock-based compensation expense related to the ESPP was recognized during the three months ended April 30, 2019 as the grant dates of the ESPP offerings were in May and June 2019. We estimated the fair value of ESPP purchase rights using a Black-Scholes option-pricing model with the following assumptions:


			Three Months Ended July 31, 2019
Expected purchase price			$30.60 - $83.39
Expected volatility			46.1% - 56.2%
Expected term (years)			0.5 - 2.1
Risk-free interest rate			1.9% - 2.5%
Expected dividend yield			—

Early Exercise of Common Stock Options

Our board of directors authorized certain stock option holders to exercise unvested options to purchase shares of common stock. Shares received from such early exercises are subject to repurchase in the event of the optionee’s termination of service, at the original issuance price, until the options are fully vested. As of July 31, 2019 and January 31, 2019, 663,826 and 1,261,230 shares of Class B common stock, respectively, were subject to repurchase at a weighted-average price of $2.71 and $1.41 per share, respectively. The cash proceeds received for unvested shares of common stock recorded within accrued expenses and other current liabilities in the condensed consolidated balance sheets was $1.8 million as of July 31, 2019 and January 31, 2019.

Restricted Stock Award

In October 2015, we issued 1,202,720 shares of common stock to a member of our board of directors under a restricted stock agreement at a grant date fair value of $0.14 per share, totaling $0.2 million. Of the total shares issued, 481,088 shares vested on the grant date and the remaining shares vest over four years from the grant date. The unvested shares are subject to a repurchase right held by us at the original purchase price. As of July 31, 2019, 180,408 shares of common stock were unvested and subject to repurchase.

Shares Reserved for Charitable Donations

During the three months ended July 31, 2019, our board of directors approved the issuance of 500,000 shares of Class A common stock for the sole purpose of being transferred to a nonprofit organization to be formed or identified by us at a future time. As of July 31, 2019, no shares have been transferred to a nonprofit organization. As a result, no expense has been recognized to date.

Stock-Based Compensation

The stock-based compensation expense by line item in the accompanying condensed consolidated statements of operations is summarized as follows:


	Three Months Ended July 31,						Six Months Ended July 31,
	2019		2018		2019		2018

	(in thousands)
Cost of revenue	$	1,902	$	130	$	2,732	$	225
Research and development	2,510		193		3,674		322
Sales and marketing	10,439		492		13,066		888
General and administrative	3,224		311		5,265		540
Total stock-based compensation expense	$	18,075	$	1,126	$	24,737	$	1,975

Income Taxes	6 Months Ended
Income Taxes	Jul. 31, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Income TaxesIncome tax expense was $1.2 million and $0.1 million for the three months ended July 31, 2019 and 2018, respectively, and $1.5 million and $0.2 million for the six months ended July 31, 2019 and 2018, respectively. Income tax expense for the three and six months ended July 31, 2019 are related to foreign income taxes and state taxes. Based on the available objective evidence during the three and six months ended July 31, 2019, we believe it is more likely than not that the tax benefits of the U.S. losses incurred may not be realized. Accordingly, we recorded a full valuation allowance against the tax benefits of the U.S. losses incurred.

Net Income Per Share Attributable to Common Stockholders

6 Months Ended

Jul. 31, 2019

Earnings Per Share [Abstract]

Net Income Per Share Attributable to Common Stockholders

The following table sets forth the computation of basic and diluted net income per share attributable to common stockholders for the periods presented:


	Three Months Ended July 31,														Six Months Ended July 31,
	2019						2018						2019				2018
	Class A		Class B		Class A		Class B		Class A		Class B		Class A		Class B

Numerator:	(in thousands, except share and per share data)
Net income	$	—	$	5,541	$	—	$	3,825	$	—	$	7,755	$	—	$	2,485
Less: undistributed earnings attributable to participating securities	—		(20)		—		(3,329)		—		(2,794)		—		(2,485)
Reallocation of net income attributable to common stockholders	751		(751)		—		—		592		(592)		—		—
Net income attributable to common stockholders, basic	$	751	$	4,770	$	—	$	496	$	592	$	4,369	$	—	$	—
Reallocation of net income attributable to common stockholders	(50)		50		—		—		(64)		64		—		—
Net income attributable to common stockholders, diluted	$	701	$	4,820	$	—	$	496	$	528	$	4,433	$	—	$	—
Denominator:
Weighted-average shares used in computing net income per share attributable to common stockholders, basic	36,950,454		234,862,687		—		83,330,741		22,908,474		169,222,036		—		81,999,734
Weighted-average shares used in computing net income per share attributable to common stockholders, diluted	37,120,969		255,064,696		—		108,454,323		22,977,562		192,797,057		—		107,584,379
Net income per share attributable to common stockholders, basic	$	0.02	$	0.02	$	0.00	$	0.01	$	0.03	$	0.03	$	0.00	$	0.00
Net income per share attributable to common stockholders, diluted	$	0.02	$	0.02	$	0.00	$	0.00	$	0.02	$	0.02	$	0.00	$	0.00

The potential shares of common stock that were excluded from the computation of diluted net income per share attributable to common stockholders for the periods presented because including them would have been antidilutive are as follows:


	Three Months Ended July 31,							Six Months Ended July 31,
	2019			2018			2019		2018
	Class A	Class B	Class A	Class B	Class A	Class B	Class A	Class B
Convertible preferred stock	—	—	—	152,665,804	—	—	—	152,665,804
Outstanding stock options	116,649	—	—	3,026,985	59,291	—	—	2,250,724
Unvested RSUs	153,751	—	—	—	78,150	—	—	—
Purchase rights committed under the ESPP	23,509	—	—	—	11,949	—	—	—
Total	293,909	—	—	155,692,789	149,390	—	—	154,916,528

The table above does not include 500,000 shares of Class A common stock reserved for the sole purpose of being transferred to a nonprofit organization to be formed or identified by us at a future time.

Related Party Transactions	6 Months Ended
Related Party Transactions	Jul. 31, 2019
Related Party Transactions [Abstract]
Related Party Transactions	Related Party TransactionsIn September 2016, we entered into a service agreement with Veeva Systems Inc. (Veeva), a cloud-based business solutions company. The chief executive officer of Veeva serves as a director on our board of directors. Revenue recognized from services provided to Veeva was $0.3 million and $0.3 million for the three months ended July 31, 2019 and 2018, respectively, and $0.7 million and $0.6 million for the six months ended July 31, 2019 and 2018, respectively.

Summary of Business and Significant Accounting Policies (Policies)	6 Months Ended
	Jul. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (GAAP) and applicable regulations of the Securities and Exchange Commission (SEC) regarding interim financial reporting, and include the accounts of Zoom Video Communications, Inc. and its subsidiaries. All intercompany balances and transactions have been eliminated in consolidation. The unaudited condensed consolidated balance sheet as of January 31, 2019 included herein was derived from the audited financial statements as of that date, but does not include all disclosures including certain notes required by GAAP on an annual reporting basis. The unaudited condensed consolidated financial statements reflect all normal recurring adjustments necessary to present fairly the balance sheets, statements of operations, statements of comprehensive income, statements of convertible preferred stock and stockholders’ equity (deficit), and statements of cash flows for the interim periods, but are not necessarily indicative of the results of operations to be anticipated for the full fiscal year or any future period.
Use of Estimates	Use of Estimates The preparation of condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates. Significant items subject to such estimates and assumptions include, but are not limited to, the estimated expected benefit period for deferred contract acquisition costs, the accounts receivable allowances, the useful lives of long-lived assets, the incremental borrowing rate for operating leases, the valuation of derivative liabilities, the value of common stock and other assumptions used to measure stock-based compensation expense, sales and other tax liabilities, the valuation of deferred income tax assets and uncertain tax positions. Actual results could differ from those estimates.
Leases	Leases All significant lease arrangements are generally recognized at lease commencement. Operating lease right-of-use (ROU) assets and operating lease liabilities are recognized at commencement. For short term leases (an initial term of 12 months or less), a ROU asset and corresponding lease liability are not recorded and we record rent expense in our condensed consolidated statements of operations on a straight-line basis over the lease term and record variable lease payments as incurred. ROU assets represent our right to use an underlying asset during the reasonably certain lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Our lease terms may include options to extend or terminate the lease when it is reasonably certain that we will exercise that option. Operating lease ROU assets and liabilities are recognized at commencement date based on the present value of fixed payments not yet paid over the lease term. We use our incremental borrowing rate based on the information available at the commencement date in determining the lease liabilities as our leases generally do not provide an implicit rate. ROU assets also include any initial direct costs incurred and any lease payments made at or before the lease commencement date, less lease incentives received. We currently do not have any finance leases.
Recent Accounting Pronouncements Not Yet Adopted and Recently Adopted Accounting Pronouncements	Recent Accounting Pronouncements Not Yet Adopted In June 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2016-13 (Topic 326), Financial Instruments – Credit Losses: Measurement of Credit Losses on Financial Instruments, which replaces the existing incurred loss impairment model with an expected credit loss model and requires a financial asset measured at amortized cost to be presented at the net amount expected to be collected. The guidance will be effective for fiscal years beginning after December 15, 2019 and interim periods within those fiscal years. Early adoption is permitted. We are currently evaluating whether the adoption of this standard will have a material impact on our condensed consolidated financial statements. Recently Adopted Accounting Pronouncements In February 2016, the FASB issued ASU No. 2016-2 (Topic 842), Leases (ASU 2016-2), which supersedes FASB ASC Topic 840, Leases (ASC 840), and makes other conforming amendments to GAAP. ASU 2016-2 requires, among other changes to the lease accounting guidance, lessees to recognize most leases on-balance sheet via a right-of-use asset and lease liability, and additional qualitative and quantitative disclosures. ASU 2016-2 is effective for the annual periods in fiscal years beginning after December 15, 2018, and interim periods therein. We adopted the standard as of February 1, 2019 using the modified retrospective method of applying the new standard at the adoption date. Under this approach, we will continue to report comparative periods presented in the period of adoption under ASC 840. We have elected the package of practical expedients permitted under the transition guidance within the new standard, which allows us to (1) carry forward the historical lease classification, (2) not reassess whether any expired or existing contracts contain leases, and (3) not reassess indirect costs for any existing leases. This election allows us to account for lease components (e.g., fixed payments or variable payments that depend on a rate that can be determined at commencement, including rent for the right to use the asset) together with nonlease components (e.g., other fixed payments that deliver a good or service including common-area maintenance costs) in the calculation of the right-of-use asset and corresponding liability. Adoption of this standard resulted in the recording of ROU assets and total liabilities of $40.5 million and $43.0 million, respectively, with no material impact on retained earnings as of February 1, 2019. See Note 7 for further details. In June 2018, the FASB issued ASU No. 2018-7, Improvements to Nonemployee Share-Based Payment Accounting (ASU 2018-7). The standard simplifies the accounting for share-based payments granted to nonemployees for goods and services and aligns most of the guidance on such payments to nonemployees with the requirements for share-based payments granted to employees. ASU 2018-7 is effective for the annual periods in fiscal years beginning after December 15, 2018, and interim periods therein, using a modified retrospective approach. We adopted ASU 2018-7 as of February 1, 2019, and our adoption did not have a material impact on the condensed consolidated financial statements. In August 2018, the FASB issued ASU No. 2018-13 (Topic 820), Fair Value Measurement: Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement (ASU 2018-13). The standard no longer requires disclosure of the amount and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy, however public companies will be required to disclose the range and weighted-average used to develop significant unobservable inputs for Level 3 fair value measurements. ASU 2018-13 is effective for the annual periods in fiscal years beginning after December 15, 2019, and interim periods therein, with early adoption permitted. We adopted ASU 2018-13 as of February 1, 2019, and our adoption did not have a material impact on the condensed consolidated financial statements.

Revenue Recognition (Tables)

6 Months Ended

Jul. 31, 2019

Revenue from Contract with Customer [Abstract]

Summary Disaggregation of Revenue by Region

The following table summarizes revenue by region based on the billing address of customers:


	Three Months Ended July 31,														Six Months Ended July 31,
	2019						2018						2019				2018
	Amount		Percentage of Revenue		Amount		Percentage of Revenue		Amount		Percentage of Revenue		Amount		Percentage of Revenue

	(in thousands, except percentages)
Americas	$	117,098	80	%	$	61,155	82	%	$	215,258	80	%	$	110,715	82	%
Asia Pacific (APAC)	12,088		8		6,078		8		22,529		9		10,820		8
Europe, Middle East, and Africa (EMEA)	16,640		12		7,293		10		30,027		11		13,061		10
Total	$	145,826	100	%	$	74,526	100	%	$	267,814	100	%	$	134,596	100	%

Cash Equivalents and Marketable Securities (Tables)

6 Months Ended

Jul. 31, 2019

Cash Equivalents And Marketable Securities [Abstract]

Summary of Marketable Securities

As of July 31, 2019 and January 31, 2019, our cash equivalents and marketable securities consisted of the following:


	July 31, 2019
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value

	(in thousands)
Money market funds	$	95,577	$	—	$	—	$	95,577
Commercial paper	14,239		—		—		14,239
Corporate debt securities	4,900		—		—		4,900
Treasury bills	19,485		2		—		19,487
Cash equivalents	134,201		2		—		134,203
Commercial paper	54,007		—		—		54,007
Agency bonds	18,399		9		(9)		18,399
Corporate and other debt securities	269,376		125		(292)		269,209
U.S. government agency securities	97,709		68		(15)		97,762
Treasury bills	101,959		44		—		102,003
Marketable securities	$	541,450	$	246	$	(316)	$	541,380


	January 31, 2019
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value

	(in thousands)
Money market funds	$	78	$	—	$	—	$	78
Cash equivalents	78		—		—		78
Commercial paper	1,243		—		—		1,243
Corporate bonds	53,267		—		(53)		53,214
Agency bonds	32,675		—		(71)		32,604
U.S. government agency securities	24,028		—		(11)		24,017
Treasury bills	1,699		—		—		1,699
Marketable securities	$	112,912	$	—	$	(135)	$	112,777

Summary of Contractual Maturities of Marketable Securities

The following table presents the contractual maturities of our marketable securities as of July 31, 2019 and January 31, 2019:


	As of
	July 31, 2019		January 31, 2019

	(in thousands)
Less than one year	$	421,166	$	85,077
Due in one to five years	120,214		27,700
Total	$	541,380	$	112,777

Fair Value Measurements (Tables)

6 Months Ended

Jul. 31, 2019

Fair Value Disclosures [Abstract]

Schedule of Financial Instruments Measured at Fair Value on Recurring Basis


	July 31, 2019
	Fair Value		Level 1		Level 2		Level 3

	(in thousands)
Financial Assets:
Money market funds	$	95,577	$	95,577	$	—	$	—
Commercial paper	14,239		—		14,239		—
Corporate debt securities	4,900		—		4,900		—
Treasury bills	19,487		—		19,487		—
Cash equivalents	134,203		95,577		38,626		—
Commercial paper	54,007		—		54,007		—
Agency bonds	18,399		—		18,399		—
Corporate and other debt securities	269,209		—		269,209		—
U.S. government agency securities	97,762		—		97,762		—
Treasury bills	102,003		—		102,003		—
Marketable securities	541,380		—		541,380		—
Certificate of deposit	100		—		100		—
Prepaid expenses and other current assets	100		—		100		—
Certificates of deposit	2,044		—		2,044		—
Other assets, non-current	2,044		—		2,044		—
Total financial assets	$	677,727	$	95,577	$	582,150	$	—


	January 31, 2019
	Fair Value		Level 1		Level 2		Level 3

	(in thousands)
Financial Assets:
Money market funds	$	78	$	78	$	—	$	—
Cash equivalents	78		78		—		—
Commercial paper	1,243		—		1,243		—
Corporate bonds	53,214		—		53,214		—
Agency bonds	32,604		—		32,604		—
U.S. government agency securities	24,017		—		24,017		—
Treasury bills	1,699		—		1,699		—
Marketable securities	112,777		—		112,777		—
Certificate of deposit	200		—		200		—
Prepaid expenses and other current assets	200		—		200		—
Certificates of deposit	2,144		—		2,144		—
Other assets, non-current	2,144		—		2,144		—
Total financial assets	$	115,199	$	78	$	115,121	$	—
Financial Liabilities:
Convertible promissory notes – derivative liabilities	$	163	$	—	$	—	$	163
Other liabilities, non-current	163		—		—		163
Total financial liabilities	$	163	$	—	$	—	$	163

Summary of Changes in Fair Value of Financial Instruments

The following table sets forth a summary of the changes in the fair value of our Level 3 financial instruments as follows:


	Derivative Liabilities
	(in thousands)
Balance - January 31, 2019	$	163
Extinguishment of derivative liabilities from the convertible promissory notes in connection with the IPO	(163)
Balance - July 31, 2019	$	—

Balance Sheet Components (Tables)

6 Months Ended

Jul. 31, 2019

Balance Sheet Components [Abstract]

Schedule of Property and Equipment

Property and equipment consisted of the following:


	As of
	July 31, 2019		January 31, 2019

	(in thousands)
Computer and office equipment	$	43,877	$	32,515
Leasehold improvements	15,290		7,660
Software	7,941		6,575
Furniture and fixtures	3,458		1,993
Property and equipment, gross	70,566		48,743
Less: accumulated depreciation and amortization	(18,579)		(11,468)
Property and equipment, net	$	51,987	$	37,275

Schedule of Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consisted of the following:


	As of
	July 31, 2019		January 31, 2019

	(in thousands)
Accrued compensation and benefits	$	30,339	$	12,004
Accrued expenses	20,092		13,596
Operating lease liabilities, current	5,277		—
Sales and other tax liabilities	2,440		1,183
Liability for early exercise of common stock options	1,797		1,781
Other	4,641		3,692
Accrued expenses and other current liabilities	$	64,586	$	32,256

Schedule of Other Liabilities Non Current

Other liabilities, non-current consisted of the following:


	As of
	July 31, 2019		January 31, 2019

	(in thousands)
Sales and other tax liabilities	$	29,182	$	20,817
Convertible promissory notes, net of debt discount	—		14,858
Deferred rent liabilities	—		2,314
Derivative liabilities	—		163
Other	2,029		1,308
Other liabilities, non-current	$	31,211	$	39,460

Operating Leases (Tables)

6 Months Ended

Jul. 31, 2019

Leases [Abstract]

Schedule of Supplemental Balance Sheet Information

Supplemental balance sheet information as of July 31, 2019, related to operating leases was as follows:


	As of July 31, 2019
	(in thousands)
Reported as:
Assets:
Operating lease right-of-use assets	$	51,126
Liabilities:
Accrued expenses and other current liabilities	$	5,277
Operating lease liabilities, non-current	48,104
Total operating lease liabilities	$	53,381

Supplemental Cash Flow and Other Information

Supplemental cash flow and other information for the six months ended July 31, 2019, related to operating leases was as follows:


	Six Months Ended July 31, 2019
	(in thousands)
Cash paid within operating cash flows	$	4,446
Operating lease right-of-use assets recognized in exchange for new operating lease obligations	$	13,770

Schedule of Future Minimum Lease Payments included in Measurement of Operating Lease Liabilities

As of July 31, 2019, the future minimum lease payments included in the measurement of our operating lease liabilities are as follows:


	As of July 31, 2019
	(in thousands)
Year Ending January 31,
2020	$	3,725
2021	8,249
2022	7,916
2023	7,954
2024	7,543
Thereafter	30,551
Total operating lease payments	$	65,938
Less: imputed interest	(12,557)
Total operating lease liabilities	$	53,381

Schedule of Future Minimum Payments Related to Operating Leases


	As of January 31, 2019
	(in thousands)
Year Ending January 31,
2020	$	7,609
2021	7,837
2022	7,888
2023	7,514
2024	7,174
Thereafter	18,635
Total future minimum payments	$	56,657

Convertible Preferred Stock, Stockholders’ Equity (Deficit) and Equity Incentive Plan (Tables)

6 Months Ended

Jul. 31, 2019

Stockholders' Equity Note [Abstract]

Summary of Stock Option Activity Under Equity Incentive Plan

A summary of stock option activity under our equity incentive plan and related information is as follows:


	Options Outstanding
	Outstanding Stock Options	Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Life (Years)	Aggregate Intrinsic Value

	(in thousands, except share, life, and per share data)
Outstanding as of January 31, 2019	35,064,465	$	1.48	6.8	$	534,572
Granted	1,537,900	36.77
Exercised	(14,272,059)	0.16
Canceled/forfeited/expired	(284,118)	6.11
Outstanding as of July 31, 2019	22,046,188	$	4.73	8.0	$	2,001,410
Vested as of July 31, 2019	8,692,345	$	1.02	7.1	$	821,380

Summary of Restricted Stock Units (RSUs) Activity Under Equity Incentive Plan

A summary of restricted stock units (RSUs) activity under our equity incentive plan and related information is as follows:


	RSUs Outstanding
	Outstanding RSUs	Weighted- Average Grant Date Fair Value Per Share
Outstanding as of January 31, 2019	—	$	—
Granted	376,786	93.89

Canceled/forfeited	(5,926)	94.52
Outstanding as of July 31, 2019	370,860	$	93.88

Summary of Assumptions for Estimating Fair Value of ESPP Purchase Rights

We estimated the fair value of ESPP purchase rights using a Black-Scholes option-pricing model with the following assumptions:


			Three Months Ended July 31, 2019
Expected purchase price			$30.60 - $83.39
Expected volatility			46.1% - 56.2%
Expected term (years)			0.5 - 2.1
Risk-free interest rate			1.9% - 2.5%
Expected dividend yield			—

Summary of Stock-based Compensation Expense by Line Item

The stock-based compensation expense by line item in the accompanying condensed consolidated statements of operations is summarized as follows:


	Three Months Ended July 31,						Six Months Ended July 31,
	2019		2018		2019		2018

	(in thousands)
Cost of revenue	$	1,902	$	130	$	2,732	$	225
Research and development	2,510		193		3,674		322
Sales and marketing	10,439		492		13,066		888
General and administrative	3,224		311		5,265		540
Total stock-based compensation expense	$	18,075	$	1,126	$	24,737	$	1,975

Net Income Per Share Attributable to Common Stockholders (Tables)

6 Months Ended

Jul. 31, 2019

Earnings Per Share [Abstract]

Schedule of Computation of Basic and Diluted Net Income Per Share

The following table sets forth the computation of basic and diluted net income per share attributable to common stockholders for the periods presented:


	Three Months Ended July 31,														Six Months Ended July 31,
	2019						2018						2019				2018
	Class A		Class B		Class A		Class B		Class A		Class B		Class A		Class B

Numerator:	(in thousands, except share and per share data)
Net income	$	—	$	5,541	$	—	$	3,825	$	—	$	7,755	$	—	$	2,485
Less: undistributed earnings attributable to participating securities	—		(20)		—		(3,329)		—		(2,794)		—		(2,485)
Reallocation of net income attributable to common stockholders	751		(751)		—		—		592		(592)		—		—
Net income attributable to common stockholders, basic	$	751	$	4,770	$	—	$	496	$	592	$	4,369	$	—	$	—
Reallocation of net income attributable to common stockholders	(50)		50		—		—		(64)		64		—		—
Net income attributable to common stockholders, diluted	$	701	$	4,820	$	—	$	496	$	528	$	4,433	$	—	$	—
Denominator:
Weighted-average shares used in computing net income per share attributable to common stockholders, basic	36,950,454		234,862,687		—		83,330,741		22,908,474		169,222,036		—		81,999,734
Weighted-average shares used in computing net income per share attributable to common stockholders, diluted	37,120,969		255,064,696		—		108,454,323		22,977,562		192,797,057		—		107,584,379
Net income per share attributable to common stockholders, basic	$	0.02	$	0.02	$	0.00	$	0.01	$	0.03	$	0.03	$	0.00	$	0.00
Net income per share attributable to common stockholders, diluted	$	0.02	$	0.02	$	0.00	$	0.00	$	0.02	$	0.02	$	0.00	$	0.00

Summary of Potential Shares of Common Stock Excluded from Computation of Diluted Net Income Per Share Attributable to Common Stockholders


	Three Months Ended July 31,							Six Months Ended July 31,
	2019			2018			2019		2018
	Class A	Class B	Class A	Class B	Class A	Class B	Class A	Class B
Convertible preferred stock	—	—	—	152,665,804	—	—	—	152,665,804
Outstanding stock options	116,649	—	—	3,026,985	59,291	—	—	2,250,724
Unvested RSUs	153,751	—	—	—	78,150	—	—	—
Purchase rights committed under the ESPP	23,509	—	—	—	11,949	—	—	—
Total	293,909	—	—	155,692,789	149,390	—	—	154,916,528

Summary of Business and Significant Accounting Policies - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended
	Apr. 23, 2019	Apr. 18, 2019	Jul. 31, 2019	Feb. 01, 2019	Jan. 31, 2019
Summary Of Business And Significant Accounting Policies [Line Items]
Operating lease, total ROU assets			$ 51,126
Operating lease, total liabilities			53,381
Accounting Standards Update 2016-02
Summary Of Business And Significant Accounting Policies [Line Items]
Operating lease, total ROU assets				$ 40,500
Operating lease, total liabilities				$ 43,000
Other Assets, Non-current
Summary Of Business And Significant Accounting Policies [Line Items]
Capitalized deferred offering costs within other assets, non-current					$ 2,400
Initial public offering
Summary Of Business And Significant Accounting Policies [Line Items]
Deferred offering costs, reclassified to stockholders' equity			$ (6,400)
Initial public offering \| Class A Common Stock
Summary Of Business And Significant Accounting Policies [Line Items]
Shares issued (in shares)	9,911,434
Shares issued, price per share (in dollars per share)	$ 36.00
Net proceeds from shares issued	$ 340,800
Initial public offering \| Class A Common Stock \| Convertible Promissory Notes
Summary Of Business And Significant Accounting Policies [Line Items]
Convertible securities converted to common stock (in shares)	426,223
Initial public offering \| Class A Common Stock \| Underwriters
Summary Of Business And Significant Accounting Policies [Line Items]
Shares issued (in shares)		3,130,435
Shares issued, price per share (in dollars per share)		$ 36.00
Net proceeds from shares issued	$ 107,100
Initial public offering \| Class B Common Stock
Summary Of Business And Significant Accounting Policies [Line Items]
Convertible securities converted to common stock (in shares)	152,665,804
Private Placement \| Class A Common Stock
Summary Of Business And Significant Accounting Policies [Line Items]
Shares issued (in shares)	2,777,777
Aggregate proceeds from shares issued	$ 100,000
Private Placement \| Class A Common Stock \| Convertible Promissory Notes
Summary Of Business And Significant Accounting Policies [Line Items]
Shares issued, price per share (in dollars per share)	$ 36.00

Revenue Recognition - Summary Disaggregation of Revenue by Region (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2019	Jul. 31, 2018
Disaggregation of Revenue [Line Items]
Revenue	$ 145,826	$ 74,526	$ 267,814	$ 134,596
Percentage of revenue	100.00%	100.00%	100.00%	100.00%
Americas
Disaggregation of Revenue [Line Items]
Revenue	$ 117,098	$ 61,155	$ 215,258	$ 110,715
Percentage of revenue	80.00%	82.00%	80.00%	82.00%
Asia Pacific (APAC)
Disaggregation of Revenue [Line Items]
Revenue	$ 12,088	$ 6,078	$ 22,529	$ 10,820
Percentage of revenue	8.00%	8.00%	9.00%	8.00%
Europe, Middle East, and Africa (EMEA)
Disaggregation of Revenue [Line Items]
Revenue	$ 16,640	$ 7,293	$ 30,027	$ 13,061
Percentage of revenue	12.00%	10.00%	11.00%	10.00%

Revenue Recognition - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2019	Jul. 31, 2018	Jan. 31, 2019
Revenue from Contract with Customer [Abstract]
Unbilled contracts receivable	$ 8.5		$ 8.5		$ 7.2
Revenue recognized included in deferred revenue	$ 64.6	$ 30.6	$ 90.7	$ 38.9

Revenue Recognition - Remaining Performance Obligation (Details) $ in Millions	Jul. 31, 2019 USD ($)
Disaggregation of Revenue [Line Items]
Remaining performance obligation	$ 457.6
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2019-08-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation percentage	62.00%
Revenue remaining performance obligation, expected timing of satisfaction period	12 months
Billed consideration
Disaggregation of Revenue [Line Items]
Remaining performance obligation	$ 181.4
Unbilled consideration
Disaggregation of Revenue [Line Items]
Remaining performance obligation	$ 276.2

Cash Equivalents and Marketable Securities - Summary of Marketable Securities (Details) - USD ($) $ in Thousands	Jul. 31, 2019	Jan. 31, 2019
Marketable Securities [Line Items]
Cash equivalents, Amortized Cost	$ 134,201	$ 78
Cash equivalents, Gross Unrealized Gains	2
Cash equivalents, Estimated Fair Value	134,203	78
Amortized Cost	541,450	112,912
Gross Unrealized Gains	246	0
Gross Unrealized Losses	(316)	(135)
Estimated Fair Value	541,380	112,777
Money market funds
Marketable Securities [Line Items]
Cash equivalents, Amortized Cost	95,577	78
Cash equivalents, Estimated Fair Value	95,577	78
Commercial paper
Marketable Securities [Line Items]
Cash equivalents, Amortized Cost	14,239
Cash equivalents, Estimated Fair Value	14,239
Amortized Cost	54,007	1,243
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	54,007	1,243
Corporate debt securities
Marketable Securities [Line Items]
Cash equivalents, Amortized Cost	4,900
Cash equivalents, Estimated Fair Value	4,900
Agency bonds
Marketable Securities [Line Items]
Amortized Cost	18,399	32,675
Gross Unrealized Gains	9	0
Gross Unrealized Losses	(9)	(71)
Estimated Fair Value	18,399	32,604
Corporate and other debt securities
Marketable Securities [Line Items]
Amortized Cost	269,376
Gross Unrealized Gains	125
Gross Unrealized Losses	(292)
Estimated Fair Value	269,209
U.S. government agency securities
Marketable Securities [Line Items]
Amortized Cost	97,709	24,028
Gross Unrealized Gains	68	0
Gross Unrealized Losses	(15)	(11)
Estimated Fair Value	97,762	24,017
Corporate bonds
Marketable Securities [Line Items]
Amortized Cost		53,267
Gross Unrealized Gains		0
Gross Unrealized Losses		(53)
Estimated Fair Value		53,214
Treasury bills
Marketable Securities [Line Items]
Cash equivalents, Amortized Cost	19,485
Cash equivalents, Gross Unrealized Gains	2
Cash equivalents, Estimated Fair Value	19,487
Amortized Cost	101,959	1,699
Gross Unrealized Gains	44	0
Gross Unrealized Losses	0	0
Estimated Fair Value	$ 102,003	$ 1,699

Cash Equivalents and Marketable Securities - Summary of Contractual Maturities of Marketable Securities (Details) - USD ($) $ in Thousands	Jul. 31, 2019	Jan. 31, 2019
Cash Equivalents And Marketable Securities [Abstract]
Less than one year	$ 421,166	$ 85,077
Due in one to five years	120,214	27,700
Total	$ 541,380	$ 112,777

Fair Value Measurements - Schedule of Financial Instruments Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Jul. 31, 2019	Jan. 31, 2019
Financial Assets:
Cash equivalents	$ 134,203	$ 78
Marketable securities	541,380	112,777
Commercial paper
Financial Assets:
Cash equivalents	14,239
Marketable securities	54,007	1,243
Corporate bonds
Financial Assets:
Marketable securities		53,214
Agency bonds
Financial Assets:
Marketable securities	18,399	32,604
Corporate and other debt securities
Financial Assets:
Marketable securities	269,209
U.S. government agency securities
Financial Assets:
Marketable securities	97,762	24,017
Fair Value ,Recurring Basis
Financial Assets:
Cash equivalents	134,203	78
Marketable securities	541,380	112,777
Prepaid expenses and other current assets	100	200
Other assets, non-current	2,044	2,144
Total financial assets	677,727	115,199
Financial Liabilities:
Convertible promissory notes – derivative liabilities		163
Other liabilities, non-current		163
Total financial liabilities		163
Fair Value ,Recurring Basis \| Money market funds
Financial Assets:
Cash equivalents	95,577	78
Fair Value ,Recurring Basis \| Commercial paper
Financial Assets:
Cash equivalents	14,239
Fair Value ,Recurring Basis \| Corporate debt securities
Financial Assets:
Cash equivalents	4,900
Fair Value ,Recurring Basis \| Treasury bills
Financial Assets:
Cash equivalents	19,487
Fair Value ,Recurring Basis \| Commercial paper
Financial Assets:
Marketable securities	54,007	1,243
Fair Value ,Recurring Basis \| Corporate bonds
Financial Assets:
Marketable securities		53,214
Fair Value ,Recurring Basis \| Agency bonds
Financial Assets:
Marketable securities	18,399	32,604
Fair Value ,Recurring Basis \| Corporate and other debt securities
Financial Assets:
Marketable securities	269,209
Fair Value ,Recurring Basis \| U.S. government agency securities
Financial Assets:
Marketable securities	97,762	24,017
Fair Value ,Recurring Basis \| Treasury bills
Financial Assets:
Marketable securities	102,003	1,699
Fair Value ,Recurring Basis \| Certificate of deposit
Financial Assets:
Prepaid expenses and other current assets	100	200
Other assets, non-current	2,044	2,144
Fair Value ,Recurring Basis \| Fair Value, Inputs, Level 1
Financial Assets:
Cash equivalents	95,577	78
Marketable securities	0	0
Prepaid expenses and other current assets	0	0
Other assets, non-current	0	0
Total financial assets	95,577	78
Financial Liabilities:
Convertible promissory notes – derivative liabilities		0
Other liabilities, non-current		0
Total financial liabilities		0
Fair Value ,Recurring Basis \| Fair Value, Inputs, Level 1 \| Money market funds
Financial Assets:
Cash equivalents	95,577	78
Fair Value ,Recurring Basis \| Fair Value, Inputs, Level 1 \| Commercial paper
Financial Assets:
Cash equivalents	0
Fair Value ,Recurring Basis \| Fair Value, Inputs, Level 1 \| Corporate debt securities
Financial Assets:
Cash equivalents	0
Fair Value ,Recurring Basis \| Fair Value, Inputs, Level 1 \| Treasury bills
Financial Assets:
Cash equivalents	0
Fair Value ,Recurring Basis \| Fair Value, Inputs, Level 1 \| Commercial paper
Financial Assets:
Marketable securities	0	0
Fair Value ,Recurring Basis \| Fair Value, Inputs, Level 1 \| Corporate bonds
Financial Assets:
Marketable securities		0
Fair Value ,Recurring Basis \| Fair Value, Inputs, Level 1 \| Agency bonds
Financial Assets:
Marketable securities	0	0
Fair Value ,Recurring Basis \| Fair Value, Inputs, Level 1 \| Corporate and other debt securities
Financial Assets:
Marketable securities	0
Fair Value ,Recurring Basis \| Fair Value, Inputs, Level 1 \| U.S. government agency securities
Financial Assets:
Marketable securities	0	0
Fair Value ,Recurring Basis \| Fair Value, Inputs, Level 1 \| Treasury bills
Financial Assets:
Marketable securities	0	0
Fair Value ,Recurring Basis \| Fair Value, Inputs, Level 1 \| Certificate of deposit
Financial Assets:
Prepaid expenses and other current assets	0	0
Other assets, non-current	0	0
Fair Value ,Recurring Basis \| Fair Value, Inputs, Level 2
Financial Assets:
Cash equivalents	38,626	0
Marketable securities	541,380	112,777
Prepaid expenses and other current assets	100	200
Other assets, non-current	2,044	2,144
Total financial assets	582,150	115,121
Financial Liabilities:
Convertible promissory notes – derivative liabilities		0
Other liabilities, non-current		0
Total financial liabilities		0
Fair Value ,Recurring Basis \| Fair Value, Inputs, Level 2 \| Money market funds
Financial Assets:
Cash equivalents	0	0
Fair Value ,Recurring Basis \| Fair Value, Inputs, Level 2 \| Commercial paper
Financial Assets:
Cash equivalents	14,239
Fair Value ,Recurring Basis \| Fair Value, Inputs, Level 2 \| Corporate debt securities
Financial Assets:
Cash equivalents	4,900
Fair Value ,Recurring Basis \| Fair Value, Inputs, Level 2 \| Treasury bills
Financial Assets:
Cash equivalents	19,487
Fair Value ,Recurring Basis \| Fair Value, Inputs, Level 2 \| Commercial paper
Financial Assets:
Marketable securities	54,007	1,243
Fair Value ,Recurring Basis \| Fair Value, Inputs, Level 2 \| Corporate bonds
Financial Assets:
Marketable securities		53,214
Fair Value ,Recurring Basis \| Fair Value, Inputs, Level 2 \| Agency bonds
Financial Assets:
Marketable securities	18,399	32,604
Fair Value ,Recurring Basis \| Fair Value, Inputs, Level 2 \| Corporate and other debt securities
Financial Assets:
Marketable securities	269,209
Fair Value ,Recurring Basis \| Fair Value, Inputs, Level 2 \| U.S. government agency securities
Financial Assets:
Marketable securities	97,762	24,017
Fair Value ,Recurring Basis \| Fair Value, Inputs, Level 2 \| Treasury bills
Financial Assets:
Marketable securities	102,003	1,699
Fair Value ,Recurring Basis \| Fair Value, Inputs, Level 2 \| Certificate of deposit
Financial Assets:
Prepaid expenses and other current assets	100	200
Other assets, non-current	2,044	2,144
Fair Value ,Recurring Basis \| Fair Value, Inputs, Level 3
Financial Assets:
Cash equivalents	0	0
Marketable securities	0	0
Prepaid expenses and other current assets	0	0
Other assets, non-current	0	0
Total financial assets	0	0
Financial Liabilities:
Convertible promissory notes – derivative liabilities		163
Other liabilities, non-current		163
Fair Value ,Recurring Basis \| Fair Value, Inputs, Level 3 \| Money market funds
Financial Assets:
Cash equivalents	0	0
Fair Value ,Recurring Basis \| Fair Value, Inputs, Level 3 \| Commercial paper
Financial Assets:
Cash equivalents	0
Fair Value ,Recurring Basis \| Fair Value, Inputs, Level 3 \| Corporate debt securities
Financial Assets:
Cash equivalents	0
Fair Value ,Recurring Basis \| Fair Value, Inputs, Level 3 \| Treasury bills
Financial Assets:
Cash equivalents	0
Fair Value ,Recurring Basis \| Fair Value, Inputs, Level 3 \| Commercial paper
Financial Assets:
Marketable securities	0	0
Fair Value ,Recurring Basis \| Fair Value, Inputs, Level 3 \| Corporate bonds
Financial Assets:
Marketable securities		0
Fair Value ,Recurring Basis \| Fair Value, Inputs, Level 3 \| Agency bonds
Financial Assets:
Marketable securities	0	0
Fair Value ,Recurring Basis \| Fair Value, Inputs, Level 3 \| Corporate and other debt securities
Financial Assets:
Marketable securities	0
Fair Value ,Recurring Basis \| Fair Value, Inputs, Level 3 \| U.S. government agency securities
Financial Assets:
Marketable securities	0	0
Fair Value ,Recurring Basis \| Fair Value, Inputs, Level 3 \| Treasury bills
Financial Assets:
Marketable securities	0	0
Fair Value ,Recurring Basis \| Fair Value, Inputs, Level 3 \| Certificate of deposit
Financial Assets:
Prepaid expenses and other current assets	0	0
Other assets, non-current	$ 0	$ 0

Fair Value Measurements - Summary of Changes in Fair Value of Financial Instruments (Details) - Fair Value, Inputs, Level 3 $ in Thousands	6 Months Ended
	Jul. 31, 2019 USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	$ 163
Ending Balance	0
Convertible Promissory Notes
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Extinguishment of derivative liabilities from the convertible promissory notes in connection with the IPO	$ (163)

Balance Sheet Components - Schedule of Property and Equipment Net (Details) - USD ($) $ in Thousands	Jul. 31, 2019	Jan. 31, 2019
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 70,566	$ 48,743
Less: accumulated depreciation and amortization	(18,579)	(11,468)
Property and equipment, net	51,987	37,275
Computer and Office Equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	43,877	32,515
Leasehold Improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	15,290	7,660
Software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	7,941	6,575
Furniture and Fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 3,458	$ 1,993

Balance Sheet Components - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2019	Jul. 31, 2018
Balance Sheet Components [Abstract]
Depreciation and amortization expense	$ 3.8	$ 1.5	$ 7.2	$ 2.6

Balance Sheet Components - Schedule of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Jul. 31, 2019	Jan. 31, 2019
Balance Sheet Components [Abstract]
Accrued compensation and benefits	$ 30,339	$ 12,004
Accrued expenses	20,092	13,596
Operating lease liabilities, current	5,277
Sales and other tax liabilities	2,440	1,183
Liability for early exercise of common stock options	1,797	1,781
Other	4,641	3,692
Accrued expenses and other current liabilities	$ 64,586	$ 32,256

Balance Sheet Components - Schedule of Other Liabilities Non Current (Details) - USD ($) $ in Thousands	Jul. 31, 2019	Jan. 31, 2019
Balance Sheet Components [Abstract]
Sales and other tax liabilities	$ 29,182	$ 20,817
Convertible promissory notes, net of debt discount	0	14,858
Deferred rent liabilities		2,314
Derivative liabilities	0	163
Other	2,029	1,308
Other liabilities, non-current	$ 31,211	$ 39,460

Convertible Promissory Notes - Additional Information (Details) - USD ($)	1 Months Ended
	Oct. 31, 2018	Jul. 31, 2019	Apr. 23, 2019
Class A Common Stock \| Initial public offering
Debt Instrument [Line Items]
Shares issued, price per share (in dollars per share)			$ 36.00
Convertible Promissory Notes
Debt Instrument [Line Items]
Debt instrument term	3 years
Convertible promissory notes – derivative liabilities		$ 200,000
Unamortized debt discount of notes		$ 100,000
Dropbox \| Convertible Promissory Notes
Debt Instrument [Line Items]
Debt instrument face amount	$ 5,000,000.0
Interest rate percentage	2.75%
Atlassian \| Convertible Promissory Notes
Debt Instrument [Line Items]
Debt instrument face amount	$ 10,000,000.0
Interest rate percentage	5.00%

Operating Leases - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2019	Jul. 31, 2018
Lessee, Lease, Description [Line Items]
Operating lease, expense	$ 2.5		$ 4.9
Short-term lease expense	$ 0.3		$ 0.5
Weighted-average remaining lease term	7 years 2 months 12 days		7 years 2 months 12 days
Weighted-average discount rate	5.10%		5.10%
Operating lease that has not yet commenced with undiscounted cash flows	$ 25.5		$ 25.5
Rent expense		$ 1.6		$ 3.0
Maximum
Lessee, Lease, Description [Line Items]
Lease contractual period	10 years		10 years

Operating Leases - Schedule of Supplemental Balance Sheet Information (Details) $ in Thousands	Jul. 31, 2019 USD ($)
Assets
Operating lease right-of-use assets	$ 51,126
Liabilities:
Accrued expenses and other current liabilities	5,277
Operating lease liabilities, non-current	48,104
Total operating lease liabilities	$ 53,381

Operating Leases - Schedule of Supplemental Cash flow Information (Details) $ in Thousands	6 Months Ended
	Jul. 31, 2019 USD ($)
Leases [Abstract]
Cash paid within operating cash flows	$ 4,446
Operating lease right-of-use assets recognized in exchange for new operating lease obligations	$ 13,770

Operating Leases - Schedule of Future Minimum Lease Payments included in Measurement of Operating Lease Liabilities (Details) $ in Thousands	Jul. 31, 2019 USD ($)
Operating Leases Future Minimum Lease Payments [Abstract]
2020	$ 3,725
2021	8,249
2022	7,916
2023	7,954
2024	7,543
Thereafter	30,551
Total operating lease payments	65,938
Less: imputed interest	(12,557)
Total operating lease liabilities	$ 53,381

Operating Leases - Schedule of Future Minimum Payments Related to Operating Leases (Details) $ in Thousands	Jan. 31, 2019 USD ($)
Operating Leases, Future Minimum Payments Due [Abstract]
2020	$ 7,609
2021	7,837
2022	7,888
2023	7,514
2024	7,174
Thereafter	18,635
Total future minimum payments	$ 56,657

Convertible Preferred Stock, Stockholders’ Equity (Deficit) and Equity Incentive Plan - Additional Information (Details) - USD ($)		1 Months Ended		6 Months Ended	12 Months Ended
	Apr. 23, 2019	Apr. 30, 2019	Oct. 31, 2015	Jul. 31, 2019	Jan. 31, 2019	Dec. 31, 2011
Class of Stock [Line Items]
Convertible preferred stock, shares outstanding (in shares)				0
Conversion of convertible preferred stock to common stock upon initial public offering				$ 159,552,000
Undesignated preferred stock shares authorized (in shares)				200,000,000	0
Undesignated referred stock par value (in dollars per share)				$ 0.001	$ 0.001
Common stock, par value (in dollars per share)				$ 0.001	$ 0.001
Stock options outstanding (in shares)		35,064,465		22,046,188
Unrecognized stock-based compensation expenses related to outstanding unvested stock options				$ 94,300,000
Proceeds from unvested shares of common stock				1,800,000	$ 1,800,000
Common Stock
Class of Stock [Line Items]
Conversion of convertible preferred stock to common stock upon initial public offering				$ 153,000
RSUs
Class of Stock [Line Items]
Unrecognized stock-based compensation excepted to be recognized over a weighted-average period				3 years 10 months 24 days
Unrecognized stock-based compensation expenses				$ 33,900,000
Number of shares of common stock unvested and subject to repurchase (in shares)				370,860	0
Stock options
Class of Stock [Line Items]
Unrecognized stock-based compensation excepted to be recognized over a weighted-average period				3 years 3 months 18 days
Employee Stock Purchase Plan
Class of Stock [Line Items]
Unrecognized stock-based compensation excepted to be recognized over a weighted-average period				1 year 10 months 24 days
Unrecognized stock-based compensation expenses				$ 78,500,000
Payroll deductions to participate in plan		20.00%
Maximum number of shares per employee (in shares)		3,000
Consecutive offering period		27 months
Restricted Stock Awards \| Common Stock
Class of Stock [Line Items]
Number of shares of common stock unvested and subject to repurchase (in shares)				180,408
Restricted Stock Awards \| Board of directors, member
Class of Stock [Line Items]
Vesting period of awards			4 years
Shares issued of common stock (in shares)			1,202,720
Grant date fair value (in dollars per share)			$ 0.14
Shares issued of common stock, value			$ 200,000
Shares vested on the grant date			481,088
2011 Plan
Class of Stock [Line Items]
Vesting period of awards						4 years
Shares of common stock reserved for grants of awards (in shares)					71,240,000
Number of shares available for future issuance (in shares)				24,300,889
2019 Plan
Class of Stock [Line Items]
Percentage of shares reserved increase				5.00%
2019 Employee Stock Purchase Plan \| Employee Stock Purchase Plan
Class of Stock [Line Items]
Annual increase in shares for available for future issuance by percentage of the outstanding ordinary shares on the first day of such fiscal year.		1.00%
Annual increase in Number of shares of common stock available for future issuance		7,500,000
Initial public offering
Class of Stock [Line Items]
Undesignated preferred stock shares authorized (in shares)	200,000,000
Undesignated referred stock par value (in dollars per share)	$ 0.001
Convertible Preferred Stock
Class of Stock [Line Items]
Convertible preferred stock, shares outstanding (in shares)	152,665,804
Convertible preferred stock, shares issued (in shares)				0
Undesignated preferred stock shares authorized (in shares)				0	158,104,540
Undesignated referred stock par value (in dollars per share)				$ 0.001	$ 0.001
Convertible Preferred Stock \| Initial public offering
Class of Stock [Line Items]
Conversion of convertible preferred stock to common stock upon initial public offering	$ 159,600,000
Class A Common Stock
Class of Stock [Line Items]
Common stock, shares authorized (in shares)				2,000,000,000	320,000,000
Class A Common Stock \| Employee Stock Purchase Plan
Class of Stock [Line Items]
Percentage of purchase price of common stock to fair market value of common stock on offering or purchase date		85.00%
ESPP excess rate purchase right, value		$ 25,000
Shares issued of common stock (in shares)				0
Class A Common Stock \| 2019 Plan
Class of Stock [Line Items]
Number of shares available for future issuance (in shares)				58,300,889
Numbers of additional shares authorized under the plan (in shares)				34,000,000
Class A Common Stock \| 2019 Employee Stock Purchase Plan \| Employee Stock Purchase Plan
Class of Stock [Line Items]
Number of shares available for future issuance (in shares)		9,000,000
Class A Common Stock \| Initial public offering
Class of Stock [Line Items]
Common stock, shares authorized (in shares)				2,000,000,000
Common stock, par value (in dollars per share)				$ 0.001
Class B Common Stock
Class of Stock [Line Items]
Common stock, shares authorized (in shares)				300,000,000	300,000,000
Number of common stock subject to repurchase (in shares)				663,826	1,261,230
Weighted average price per share (in dollars per share)		$ 1.41		$ 2.71
Class B Common Stock \| 2011 Plan
Class of Stock [Line Items]
Stock options outstanding (in shares)					35,064,465
Number of shares available for future issuance (in shares)					1,848,100
Class B Common Stock \| Initial public offering
Class of Stock [Line Items]
Common stock, shares authorized (in shares)				300,000,000
Common stock, par value (in dollars per share)				$ 0.001

Convertible Preferred Stock, Stockholders’ Equity (Deficit) and Equity Incentive Plan - Summary of Stock Option Activity Under Equity Incentive Plan (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2019	Apr. 30, 2019	Jul. 31, 2019
Outstanding Stock Options
Beginning balance (in shares)	35,064,465
Granted (in shares)			1,537,900
Exercised (in shares)			(14,272,059)
Cancelled/forfeited/expired (in shares)			(284,118)
Ending balance (in shares)	22,046,188	35,064,465	22,046,188
Weighted- Average Exercise Price
Beginning balance (in dollars per share)	$ 1.48
Granted (in dollars per share)			$ 36.77
Exercised (in dollars per share)			0.16
Cancelled/forfeited/expired (in dollars per share)			6.11
Ending balance (in dollars per share)	$ 4.73	$ 1.48	$ 4.73
Weighted- Average Remaining Contractual Life (Years)		6 years 9 months 18 days	8 years
Options Outstanding, Aggregate Intrinsic Value	$ 2,001,410	$ 534,572	$ 2,001,410
Outstanding Stock Options, Vested (in shares)	8,692,345		8,692,345
Weighted Average Exercise price, Vested (in shares)	$ 1.02		$ 1.02
Weighted-Average Remaining Contractual Life (Years), Vested			7 years 1 month 6 days
Options Outstanding, Aggregate Intrinsic Value, Vested	$ 821,380		$ 821,380

Convertible Preferred Stock, Stockholders’ Equity (Deficit) and Equity Incentive Plan - Summary of Restricted Stock Units Activity Under Equity Incentive Plan (Details) - RSUs	6 Months Ended
	Jul. 31, 2019 $ / shares shares
Outstanding RSUs
Beginning balance (in units) \| shares	0
Granted (in units) \| shares	376,786
Cancelled/forfeited (in units) \| shares	(5,926)
Ending balance (in units) \| shares	370,860
Weighted- Average Grant Date Fair Value Per Share
Beginning balance (in dollars per unit) \| $ / shares	$ 0
Granted (in dollars per unit) \| $ / shares	93.89
Cancelled/forfeited (in dollars per unit) \| $ / shares	94.52
Ending balance (in dollars per unit) \| $ / shares	$ 93.88

Convertible Preferred Stock, Stockholders’ Equity (Deficit) and Equity Incentive Plan - Fair Value of ESPP Purchase Rights Assumptions (Details) - Employee Stock Purchase Plan	3 Months Ended
	Jul. 31, 2019 $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility, minimum	46.10%
Expected volatility, maximum	56.20%
Risk-free interest rate, minimum	1.90%
Risk-free interest rate, maximum	2.50%
Expected dividend yield	0.00%
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected purchase price (in dollars per share)	$ 30.60
Expected term	6 years
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected purchase price (in dollars per share)	$ 83.39
Expected term	2 years 1 month 6 days

Convertible Preferred Stock, Stockholders’ Equity (Deficit) and Equity Incentive Plan - Summary of Stock-based Compensation Expense by Line Item (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2019	Jul. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense	$ 18,075	$ 1,126	$ 24,737	$ 1,975
Cost of revenue
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense	1,902	130	2,732	225
Research and development
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense	2,510	193	3,674	322
Sales and marketing
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense	10,439	492	13,066	888
General and administrative
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense	$ 3,224	$ 311	$ 5,265	$ 540

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
Income Taxes (Details) - USD ($) $ in Thousands	Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2019	Jul. 31, 2018
Income Tax Disclosure [Abstract]
Income tax expense	$ 1,216	$ 141	$ 1,532	$ 238

Net Income Per Share Attributable to Common Stockholders - Schedule of Computation of Basic and Diluted Net Income Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2019	Jul. 31, 2018
Numerator:
Net income	$ 5,541	$ 3,825	$ 7,755	$ 2,485
Net income attributable to common stockholders	$ 5,521	$ 496	$ 4,961	$ 0
Denominator:
Weighted-average shares used in computing net income per share attributable to common stockholders, basic (in shares)	271,813,141	83,330,741	192,130,510	81,999,734
Weighted-average shares used in computing net income per share attributable to common stockholders, diluted (in shares)	292,185,665	108,454,323	215,774,619	107,584,379
Net income per share attributable to common stockholders, basic (in dollars per share)	$ 0.02	$ 0.01	$ 0.03	$ 0.00
Net income per share attributable to common stockholders, diluted (in dollars per share)	$ 0.02	$ 0.00	$ 0.02	$ 0.00
Class A Common Stock
Numerator:
Net income	$ 0		$ 0
Less: undistributed earnings attributable to participating securities	0		0
Reallocation of net income attributable to common stockholders	751		592
Net income attributable to common stockholders	751		592
Reallocation of net income attributable to common stockholders	(50)		(64)
Net income (loss) attributable to common stockholders, diluted	$ 701		$ 528
Denominator:
Weighted-average shares used in computing net income per share attributable to common stockholders, basic (in shares)	36,950,454		22,908,474
Weighted-average shares used in computing net income per share attributable to common stockholders, diluted (in shares)	37,120,969		22,977,562
Net income per share attributable to common stockholders, basic (in dollars per share)	$ 0.02		$ 0.03
Net income per share attributable to common stockholders, diluted (in dollars per share)	$ 0.02		$ 0.02
Class B Common Stock
Numerator:
Net income	$ 5,541	$ 3,825	$ 7,755	$ 2,485
Less: undistributed earnings attributable to participating securities	(20)	(3,329)	(2,794)	(2,485)
Reallocation of net income attributable to common stockholders	(751)	0	(592)	0
Net income attributable to common stockholders	4,770	496	4,369	0
Reallocation of net income attributable to common stockholders	50	0	64	0
Net income (loss) attributable to common stockholders, diluted	$ 4,820	$ 496	$ 4,433	$ 0
Denominator:
Weighted-average shares used in computing net income per share attributable to common stockholders, basic (in shares)	234,862,687	83,330,741	169,222,036	81,999,734
Weighted-average shares used in computing net income per share attributable to common stockholders, diluted (in shares)	255,064,696	108,454,323	192,797,057	107,584,379
Net income per share attributable to common stockholders, basic (in dollars per share)	$ 0.02	$ 0.01	$ 0.03	$ 0.00
Net income per share attributable to common stockholders, diluted (in dollars per share)	$ 0.02	$ 0.00	$ 0.02	$ 0.00

Net Income Per Share Attributable to Common Stockholders - Summary of Potential Shares of Common Stock Excluded from Computation of Diluted Net Income Per Share Attributable to Common Stockholders (Details) - shares	3 Months Ended		6 Months Ended
	Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2019	Jul. 31, 2018
Class A Common Stock
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	293,909		149,390
Issuance of common stock reserved for charitable donation (in shares)			500,000
Class A Common Stock \| Outstanding stock options
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	116,649		59,291
Class A Common Stock \| Unvested RSUs
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	153,751		78,150
Class A Common Stock \| Purchase rights committed under the ESPP
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	23,509		11,949
Class B Common Stock
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)		155,692,789		154,916,528
Class B Common Stock \| Convertible preferred stock
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)		152,665,804		152,665,804
Class B Common Stock \| Outstanding stock options
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)		3,026,985		2,250,724

Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2019	Jul. 31, 2018
Veeva Systems Inc.
Related Party Transaction [Line Items]
Revenue from related party	$ 0.3	$ 0.3	$ 0.7	$ 0.6

Label	Element	Value
Restricted Cash and Cash Equivalents, Noncurrent	us-gaap_RestrictedCashAndCashEquivalentsNoncurrent	$ 1,175,000
Restricted Cash and Cash Equivalents, Current	us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue	$ 200,000