Box (BOX) 10-Q 6 Dec 19 2020 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Oct. 31, 2019	Nov. 29, 2019
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Oct. 31, 2019
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Trading Symbol	BOX
Entity Registrant Name	BOX INC
Entity Central Index Key	0001372612
Current Fiscal Year End Date	--01-31
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Title of 12(b) Security	Class A Common Stock, $0.0001 par value per share
Security Exchange Name	NYSE
Entity File Number	001-36805
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	20-2714444
Entity Address, Address Line One	900 Jefferson Ave
Entity Address, City or Town	Redwood City
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94063
City Area Code	877
Local Phone Number	729-4269
Document Quarterly Report	true
Document Transition Report	false
Entity Common Stock, Shares Outstanding		149,626,825

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands		Oct. 31, 2019		Jan. 31, 2019
Current assets:
Cash and cash equivalents	[1]	$ 200,890		$ 217,518	[2]
Accounts receivable, net of allowance of $4,141 and $2,728		108,393	[1]	175,130	[2]
Prepaid expenses and other current assets		18,559	[1]	14,223	[2]
Deferred commissions		27,249	[1]	21,683	[2]
Total current assets		355,091	[1]	428,554	[2]
Property and equipment, net		189,865	[1]	137,703	[2]
Operating lease right-of-use assets, net	[1]	203,926
Goodwill		18,740	[1]	18,740	[2]
Restricted cash	[2]			238
Deferred commissions, non-current		56,525	[1]	53,880	[2]
Other long-term assets		19,771	[1]	11,046	[2]
Total assets		843,918	[1]	650,161	[2]
Current liabilities:
Accounts payable		15,543	[1]	15,431	[2]
Accrued compensation and benefits		18,718	[1]	34,484	[2]
Accrued expenses and other current liabilities		31,229	[1]	31,378	[2]
Finance lease liabilities		49,306	[1]	28,317	[2]
Operating lease liabilities	[1]	40,335
Deferred revenue		312,375	[1]	353,590	[2]
Total current liabilities		467,506	[1]	463,200	[2]
Debt, non-current		40,000	[1]	40,000	[2]
Finance lease liabilities, non-current		82,637	[1]	44,597	[2]
Operating lease liabilities, non-current	[1]	213,369
Deferred revenue, non-current		13,272	[1]	21,451	[2]
Other long-term liabilities		6,359	[1]	49,508	[2]
Total liabilities		823,143	[1]	618,756	[2]
Commitments and contingencies (Note 6)			[1]		[2]
Stockholders’ equity:
Preferred stock, par value $0.0001 per share; 100,000 shares authorized, no shares issued and outstanding as of October 31 (unaudited) and January 31, 2019			[1]		[2]
Class A common stock, par value $0.0001 per share; 1,000,000 shares authorized; 149,478 shares (unaudited) and 144,311 shares issued and outstanding as of October 31 and January 31, 2019, respectively		15	[1]	14	[2]
Additional paid-in capital		1,269,904	[1]	1,166,443	[2]
Treasury stock		(1,177)	[1]	(1,177)	[2]
Accumulated other comprehensive (loss) income		(111)	[1]	23	[2]
Accumulated deficit		(1,247,856)	[1]	(1,133,898)	[2]
Total stockholders’ equity		20,775	[1]	31,405	[2]
Total liabilities and stockholders’ equity		$ 843,918	[1]	$ 650,161	[2]
[1]	As reported and disclosed under ASC Topic 842
[2]	As reported and disclosed under ASC Topic 840

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Oct. 31, 2019	Jan. 31, 2019
Statement Of Financial Position [Abstract]
Allowance for accounts receivable	$ 4,141	$ 2,728
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	100,000,000	100,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Class A Common Stock, par value	$ 0.0001	$ 0.0001
Class A Common Stock, shares authorized	1,000,000,000	1,000,000,000
Class A Common Stock, shares issued	149,478,000	144,311,000
Class A Common Stock, shares outstanding	149,478,000	144,311,000

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended				9 Months Ended
	Oct. 31, 2019	[1]	Oct. 31, 2018	[2]	Oct. 31, 2019	[1]	Oct. 31, 2018	[2]
Income Statement [Abstract]
Revenue	$ 177,156		$ 155,944		$ 512,679		$ 444,673
Cost of revenue	56,302		44,724		158,858		126,397
Gross profit	120,854		111,220		353,821		318,276
Operating expenses:
Research and development	50,652		42,310		146,589		122,388
Sales and marketing	82,939		84,490		242,164		238,472
General and administrative	26,496		23,884		75,959		69,959
Total operating expenses	160,087		150,684		464,712		430,819
Loss from operations	(39,233)		(39,464)		(110,891)		(112,543)
Interest expense, net	(738)		(47)		(1,141)		(208)
Other loss, net	(653)		(321)		(840)		(1,243)
Loss before provision for income taxes	(40,624)		(39,832)		(112,872)		(113,994)
Provision for income taxes	272		364		1,086		924
Net loss	$ (40,896)		$ (40,196)		$ (113,958)		$ (114,918)
Net loss per share, basic and diluted	$ (0.28)		$ (0.28)		$ (0.78)		$ (0.82)
Weighted-average shares used to compute net loss per share, basic and diluted	148,555		142,366		146,997		140,559
[1]	As reported and disclosed under ASC Topic 842
[2]	As reported and disclosed under ASC Topic 840

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Unaudited) - USD ($) $ in Thousands		3 Months Ended				9 Months Ended
		Oct. 31, 2019		Oct. 31, 2018	[2]	Oct. 31, 2019		Oct. 31, 2018	[2]
Statement Of Income And Comprehensive Income [Abstract]
Net loss		$ (40,896)	[1]	$ (40,196)		$ (113,958)	[1]	$ (114,918)
Other comprehensive loss
Changes in foreign currency translation adjustment	[3]	(7)	[1]	(89)		(83)	[1]	(375)
Net unrealized loss on cash flow hedge	[1],[3]	(51)				(51)
Other comprehensive loss	[3]	(58)	[1]	(89)		(134)	[1]	(375)
Comprehensive loss		$ (40,954)	[1]	$ (40,285)		$ (114,092)	[1]	$ (115,293)
[1]	As reported and disclosed under ASC Topic 842
[2]	As reported and disclosed under ASC Topic 840
[3]	Tax effect was not material

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS EQUITY - USD ($) $ in Thousands		Total		Class A Common Stock	Class A and Class B Common Stock		Additional Paid-in Capital	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Balance, Beginning at Jan. 31, 2018		$ 14,968			$ 13	[1]	$ 1,054,932	$ (1,177)	$ 288	$ (1,039,088)
Balance, Beginning, Shares at Jan. 31, 2018	[1]				137,317,000
Issuance of common stock upon stock option exercises		4,369					4,369
Issuance of common stock upon stock option exercises (in shares)	[1]				631,000
Issuance of common stock in connection with charitable donations		243					243
Issuance of common stock in connection with charitable donations (in shares)	[1]				12,000
Stock-based compensation related to stock awards		25,443					25,443
Vesting of restricted stock units, net of shares withheld for employee payroll taxes (in shares)	[1]				1,011,000
Employee payroll taxes withheld related to vesting of restricted stock units		(13,295)					(13,295)
Common stock issued under employee stock purchase plan		11,846					11,846
Common stock issued under employee stock purchase plan (in shares)	[1]				1,004,000
Other comprehensive income (loss)		(124)							(124)
Net loss		(36,637)								(36,637)
Balance, Ending at Apr. 30, 2018		46,615			$ 13	[1]	1,083,538	(1,177)	164	(1,035,923)
Balance, Ending, Shares at Apr. 30, 2018	[1]				139,975,000
Balance, Beginning at Jan. 31, 2018		14,968			$ 13	[1]	1,054,932	(1,177)	288	(1,039,088)
Balance, Beginning, Shares at Jan. 31, 2018	[1]				137,317,000
Other comprehensive income (loss)	[2],[3]	(375)
Net loss		(114,918)	[2]	$ (110,868)
Balance, Ending at Oct. 31, 2018		25,646			$ 14	[1]	1,141,100	(1,177)	(87)	(1,114,204)
Balance, Ending, Shares at Oct. 31, 2018	[1]				143,388,000
Cumulative effect of ASC adoption | Topic 606		39,802								39,802
Balance, Beginning at Apr. 30, 2018		46,615			$ 13	[1]	1,083,538	(1,177)	164	(1,035,923)
Balance, Beginning, Shares at Apr. 30, 2018	[1]				139,975,000
Issuance of common stock upon stock option exercises		8,462					8,462
Issuance of common stock upon stock option exercises (in shares)	[1]				815,000
Issuance of common stock in connection with acquisitions		1,053					1,053
Issuance of common stock in connection with acquisitions (in shares)	[1]				40,000
Stock-based compensation related to stock awards		29,252					29,252
Vesting of restricted stock units, net of shares withheld for employee payroll taxes		1			$ 1	[1]
Vesting of restricted stock units, net of shares withheld for employee payroll taxes (in shares)	[1]				776,000
Employee payroll taxes withheld related to vesting of restricted stock units		(12,009)					(12,009)
Other comprehensive income (loss)		(162)							(162)
Net loss		(38,085)								(38,085)
Balance, Ending at Jul. 31, 2018		35,127			$ 14	[1]	1,110,296	(1,177)	2	(1,074,008)
Balance, Ending, Shares at Jul. 31, 2018	[1]				141,606,000
Issuance of common stock upon stock option exercises		2,145					2,145
Issuance of common stock upon stock option exercises (in shares)	[1]				299,000
Stock-based compensation related to stock awards		30,241					30,241
Vesting of restricted stock units, net of shares withheld for employee payroll taxes (in shares)	[1]				869,000
Employee payroll taxes withheld related to vesting of restricted stock units		(11,597)					(11,597)
Common stock issued under employee stock purchase plan		10,015					10,015
Common stock issued under employee stock purchase plan (in shares)	[1]				614,000
Other comprehensive income (loss)		(89)	[2],[3]						(89)
Net loss		(40,196)	[2]	(40,196)						(40,196)
Balance, Ending at Oct. 31, 2018		25,646			$ 14	[1]	1,141,100	(1,177)	(87)	(1,114,204)
Balance, Ending, Shares at Oct. 31, 2018	[1]				143,388,000
Balance, Beginning at Jan. 31, 2019		31,405	[2]	$ 14			1,166,443	(1,177)	23	(1,133,898)
Balance, Beginning, Shares at Jan. 31, 2019				144,311,000
Issuance of common stock upon stock option exercises		1,213					1,213
Issuance of common stock upon stock option exercises (in shares)				152,000
Stock-based compensation related to stock awards		35,678					35,678
Vesting of restricted stock units, net of shares withheld for employee payroll taxes		1		$ 1
Vesting of restricted stock units, net of shares withheld for employee payroll taxes (in shares)				1,205,000
Employee payroll taxes withheld related to vesting of restricted stock units		(14,624)					(14,624)
Common stock issued under employee stock purchase plan		13,605					13,605
Common stock issued under employee stock purchase plan (in shares)				829,000
Other comprehensive income (loss)		88							88
Net loss		(36,828)								(36,828)
Balance, Ending at Apr. 30, 2019		30,538		$ 15			1,202,315	(1,177)	111	(1,170,726)
Balance, Ending, Shares at Apr. 30, 2019				146,497,000
Balance, Beginning at Jan. 31, 2019		$ 31,405	[2]	$ 14			1,166,443	(1,177)	23	(1,133,898)
Balance, Beginning, Shares at Jan. 31, 2019				144,311,000
Issuance of common stock upon stock option exercises (in shares)		417,245
Other comprehensive income (loss)	[3],[4]	$ (134)
Net loss		(113,958)	[4]	$ (113,958)
Balance, Ending at Oct. 31, 2019		20,775	[4]	$ 15			1,269,904	(1,177)	(111)	(1,247,856)
Balance, Ending, Shares at Oct. 31, 2019				149,478,000
Balance, Beginning at Apr. 30, 2019		30,538		$ 15			1,202,315	(1,177)	111	(1,170,726)
Balance, Beginning, Shares at Apr. 30, 2019				146,497,000
Issuance of common stock upon stock option exercises		1,031					1,031
Issuance of common stock upon stock option exercises (in shares)				143,000
Stock-based compensation related to stock awards		38,035					38,035
Vesting of restricted stock units, net of shares withheld for employee payroll taxes (in shares)				1,082,000
Employee payroll taxes withheld related to vesting of restricted stock units		(10,940)					(10,940)
Other comprehensive income (loss)		(164)							(164)
Net loss		(36,234)								(36,234)
Balance, Ending at Jul. 31, 2019		22,266		$ 15			1,230,441	(1,177)	(53)	(1,206,960)
Balance, Ending, Shares at Jul. 31, 2019				147,722,000
Issuance of common stock upon stock option exercises		764					764
Issuance of common stock upon stock option exercises (in shares)				122,000
Stock-based compensation related to stock awards		38,373					38,373
Vesting of restricted stock units, net of shares withheld for employee payroll taxes (in shares)				989,000
Employee payroll taxes withheld related to vesting of restricted stock units		(9,494)					(9,494)
Common stock issued under employee stock purchase plan		9,820					9,820
Common stock issued under employee stock purchase plan (in shares)				645,000
Other comprehensive income (loss)		(58)	[3],[4]						(58)
Net loss		(40,896)	[4]	$ (40,896)						(40,896)
Balance, Ending at Oct. 31, 2019		$ 20,775	[4]	$ 15			$ 1,269,904	$ (1,177)	$ (111)	$ (1,247,856)
Balance, Ending, Shares at Oct. 31, 2019				149,478,000
[1]	On June 14, 2018, all outstanding shares of our Class B common stock automatically converted into the same number of shares of Class A common stock pursuant to the terms of our Amended and Restated Certificate of Incorporation. We do not intend to issue any additional shares of Class B common stock.
[2]	As reported and disclosed under ASC Topic 840
[3]	Tax effect was not material
[4]	As reported and disclosed under ASC Topic 842

CONDENSED CONSOLIDATED STATEM_4

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands		3 Months Ended				9 Months Ended
		Oct. 31, 2019		Oct. 31, 2018		Oct. 31, 2019		Oct. 31, 2018
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss		$ (40,896)	[1]	$ (40,196)	[2]	$ (113,958)	[1]	$ (114,918)	[2]
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization		16,038	[1]	11,433	[2]	42,102	[1]	34,677	[2]
Stock-based compensation expense		37,758	[1]	31,790	[2]	106,925	[1]	89,086	[2]
Amortization of deferred commissions		6,650	[1]	4,516	[2]	18,360	[1]	12,231	[2]
Loss (gain) on disposal of property and equipment				586	[2]	(2)	[1]	586	[2]
Others		7	[1]	(18)	[2]	(113)	[1]	(13)	[2]
Changes in operating assets and liabilities:
Accounts receivable, net		9,510	[1]	9,065	[2]	66,737	[1]	57,001	[2]
Deferred commissions		(11,617)	[1]	(9,753)	[2]	(26,571)	[1]	(23,057)	[2]
Prepaid expenses and other assets		1,550	[1]	350	[2]	(3,289)	[1]	(4,583)	[2]
Operating lease right-of-use assets, net	[1]	9,007				26,445
Accounts payable		(7,486)	[1]	959	[2]	(4,201)	[1]	(246)	[2]
Accrued expenses and other liabilities		919	[1]	(1,640)	[2]	(8,392)	[1]	(16,907)	[2]
Operating lease liabilities	[1]	(7,360)				(24,950)
Deferred revenue		(5,187)	[1]	(276)	[2]	(49,394)	[1]	(9,868)	[2]
Net cash provided by operating activities		8,893	[1]	6,816	[2]	29,699	[1]	23,989	[2]
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment		(1,055)	[1]	(5,247)	[2]	(4,221)	[1]	(12,613)	[2]
Capitalized internal-use software costs		(2,469)	[1]	(1,343)	[2]	(6,482)	[1]	(1,343)	[2]
Proceeds from sales of property and equipment				1	[2]	6	[1]	2	[2]
Acquisitions	[2]							(458)
Net cash used in investing activities		(3,524)	[1]	(6,589)	[2]	(10,697)	[1]	(14,412)	[2]
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from exercise of stock options		764	[1]	2,145	[2]	3,008	[1]	14,976	[2]
Proceeds from issuances of common stock under employee stock purchase plan		9,820	[1]	10,015	[2]	23,425	[1]	21,861	[2]
Employee payroll taxes paid related to net share settlement of restricted stock units		(9,494)	[1]	(11,596)	[2]	(35,055)	[1]	(36,901)	[2]
Principal payments of finance lease liabilities		(7,055)	[1]	(4,290)	[2]	(26,200)	[1]	(17,192)	[2]
Acquisition related contingent consideration	[1]					(936)
Net cash used in financing activities		(5,965)	[1]	(3,726)	[2]	(35,758)	[1]	(17,256)	[2]
Effect of exchange rate changes on cash, cash equivalents, and restricted cash		(3)	[1]	(123)	[2]	(110)	[1]	(405)	[2]
Net decrease in cash, cash equivalents, and restricted cash		(599)	[1]	(3,622)	[2]	(16,866)	[1]	(8,084)	[2]
Cash, cash equivalents, and restricted cash, beginning of period		201,489	[1]	203,964	[2]	217,756	[1]	208,426	[2]
Cash, cash equivalents, and restricted cash, end of period		200,890	[1]	200,342	[2]	200,890	[1]	200,342	[2]
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash paid for interest		1,258	[1]	623	[2]	3,768	[1]	1,795	[2]
Cash paid for income taxes, net of tax refunds		967	[1]	501	[2]	2,718	[1]	1,493	[2]
SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING AND FINANCING ACTIVITIES:
Accrued equipment purchases		3,835	[1]	10,560	[2]	4,012	[1]	11,151	[2]
Increase in long-lived assets resulting from capitalizing asset retirement costs						2,717	[1]	566	[2]
Stock-based compensation capitalized in internal-use software costs	[1]	1,188				3,626
Increase in finance lease liabilities		40,530	[1],[3]	9,230	[2]	84,950	[1],[3]	27,751	[2]
Issuance of common stock in connection with acquisitions	[2]							1,053
Contingent consideration accruals in connection with acquisitions	[2]							936
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH INFORMATION:
Cash and cash equivalents, beginning of period		201,489	[1]	203,726	[2]	217,518	[1],[2]	208,076	[2]
Restricted cash, beginning of period				238	[2]	238	[1]	350	[2]
Cash, cash equivalents, and restricted cash, beginning of period		201,489	[1]	203,964	[2]	217,756	[1]	208,426	[2]
Cash and cash equivalents, end of period		200,890	[1]	200,104	[2]	200,890	[1]	200,104	[2]
Restricted cash, end of period	[2]			238				238
Cash, cash equivalents, and restricted cash, end of period		$ 200,890	[1]	$ 200,342	[2]	$ 200,890	[1]	$ 200,342	[2]
[1]	As reported and disclosed under ASC Topic 842
[2]	As reported and disclosed under ASC Topic 840
[3]	Includes the adoption impact of ASC Topic 842 on the opening balance sheet as of February 1, 2019 as disclosed in Note 1.

Description of Business and Bas

Description of Business and Basis of Presentation	9 Months Ended
	Oct. 31, 2019
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Description of Business and Basis of Presentation	Note 1. Description of Business and Basis of Presentation Description of Business We were incorporated in the state of Washington in April 2005, and were reincorporated in the state of Delaware in March 2008. We changed our name from Box.Net, Inc. to Box, Inc. in November 2011. Box provides a leading cloud content management platform that enables organizations of all sizes to securely manage cloud content while allowing easy, secure access and sharing of this content from anywhere, on any device. Basis of Presentation The accompanying condensed consolidated balance sheet as of October 31, 2019 and the condensed consolidated statements of operations, the condensed consolidated statements of comprehensive loss, the condensed consolidated statements of stockholders’ equity, and the condensed consolidated statements of cash flows for the three and nine months ended October 31, 2019 and 2018, respectively, are unaudited. The condensed consolidated balance sheet data as of January 31, 2019 was derived from the audited consolidated financial statements that are included in our Annual Report on Form 10-K for the fiscal year ended January 31, 2019 (the “Form 10-K”), which was filed with the Securities and Exchange Commission (the “SEC”) on March 20, 2019. The accompanying statements should be read in conjunction with the audited consolidated financial statements and related notes contained in our Form 10-K. Other than items discussed under Use of Estimates , Recently Adopted Accounting Pronouncements , and Summary of Significant Accounting Policies , there have been no other material changes to our critical accounting policies and estimates during the nine months ended October 31, 2019 from those disclosed in Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations in our Form 10-K. The accompanying condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) for interim financial information. Accordingly, they do not include all of the financial information and footnotes required by U.S. GAAP for complete financial statements. In the opinion of our management, the unaudited condensed consolidated financial statements have been prepared on the same basis as the audited consolidated financial statements in the Form 10-K, and include all adjustments necessary for the fair presentation of our balance sheet as of October 31, 2019, and our results of operations, including our comprehensive loss, our stockholders’ equity, and our cash flows for the three and nine months ended October 31, 2019 and 2018. All adjustments are of a normal recurring nature. The results for the three and nine months ended October 31, 2019 are not necessarily indicative of the results to be expected for any subsequent quarter or for the fiscal year ending January 31, 2020. Certain prior period amounts reported in our condensed consolidated financial statements and notes thereto have been reclassified to conform to the current year presentation. Such reclassifications did not affect total revenues, operating income, or net income. Use of Estimates The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make, on an ongoing basis, estimates and assumptions that affect the amounts reported and disclosed in the financial statements and the accompanying notes. Actual results could differ from these estimates. Such estimates include, but are not limited to, the determination of the allowance for accounts receivable, fair value of acquired intangible assets and goodwill, useful lives of acquired intangible assets and property and equipment, timing and costs associated with our asset retirement obligations, the nature and timing of satisfaction of performance obligations, estimate of standalone selling price allocation included in contracts with multiple performance obligations, the estimated expected benefit period for deferred commissions, the estimated useful life of capitalized internal-use software costs, observable price changes of , the incremental borrowing rate we use to determine our lease liabilities, Certain Risks and Concentrations Our financial instruments that are exposed to concentrations of credit risk consist primarily of cash and cash equivalents and accounts receivable. Although we deposit our cash with multiple financial institutions, our deposits, at times, may exceed deposit insurance coverage limits. We sell to a broad range of customers. Our revenue is derived substantially from the United States across a multitude of industries. Accounts receivable are derived from the delivery of our services to customers primarily located in the United States. We accept and settle our accounts receivable using credit cards, electronic payments and checks. A majority of our lower dollar value invoices are settled by credit card on or near the date of the invoice. We do not require collateral from customers to secure accounts receivable. We maintain an allowance for doubtful accounts based upon the expected collectability, which takes into consideration specific customer creditworthiness and current economic trends. We believe collections of our accounts receivable are probable based on the size, industry diversification, financial condition and past transaction history of our customers. As of October 31, 2019 and January 31, 2019, one reseller, which is also a customer, accounted for more than 10% of total accounts receivable. One reseller, which is also a customer, represented 10% of our revenue for the three and nine months ended October 31, 2019. One reseller, which is also a customer, represented 12% of our revenue for the three and nine months ended October 31, 2018. We serve our customers and users from data center facilities operated by third parties. In order to reduce the risk of down time of our subscription services, we have established data centers and third-party cloud computing and hosting providers in various locations in the United States and abroad. We have internal procedures to restore services in the event of disaster at any one of our current data center facilities. Even with these procedures for disaster recovery in place, our cloud services could be significantly interrupted during the implementation of the procedures to restore services. Geographic Locations For both the three and nine months ended October 31, 2019, revenue attributable to customers in the United States was 75% Substantially all of our net assets are located in the United States. As of October 31, 2019 and January 31, 2019, property and equipment located in the United States was approximately 94% and 91%, respectively. Recently Adopted Accounting Pronouncements In February 2016, the FASB issued ASU 2016-02, Leases, Adoption Impact of ASC Topic 842 on th e Opening Balance Sheet as of February 1, 2019 In connection with the adoption of ASC Topic 842, we recognized operating lease right-of-use assets and operating lease liabilities on our condensed consolidated balance sheet primarily related to our office and data center facilities of $206.6 million and $255.0 million, respectively, out of which $218.6 million was the non-current portion of operating lease liabilities. The difference between the operating lease right-of-use assets and operating lease liabilities primarily represents the existing deferred rent liability balance as of the adoption date. Our accounting for finance leases remains substantially unchanged from the legacy ASC Topic 840 except for the impacts of applying the practical expedient to not separate lease and non-lease components. As a result of recognizing the non-lease components as part of our finance leases, we recognized finance lease right-of-use assets and corresponding finance leases liabilities of $5.2 million, out of which $2.9 million represented the non-current portion of the additional finance lease liabilities. As a sub-lessor, accounting for our subleases is largely unchanged from the legacy ASC Topic 840. The adoption of ASC Topic 842 did not have a material effect on our condensed consolidated statements of operations and cash flows, however, it did materially increase our assets and liabilities on the condensed consolidated balance sheet. The adoption of ASC Topic 842 resulted in changes to our accounting estimates and accounting policy for leases. Please see Summary of Significant Accounting Policies Ongoing ASC Topic 842 Financial Statement Impact as of and for the three and nine months ended October 31, 2019 Refer to “ Note 4. Balance Sheet Components ” and “ Note 5. Leases ” for the ongoing ASC Topic 842 impact on the condensed consolidated financial statements as of and for the three and nine months ended October 31, 2019. Recently Issued Accounting Pronouncements In June 2016, the FASB issued ASU 2016-13, Financial Instruments- Credit Losses have elected not to adopt the standard earlier. We are in the process of evaluating appropriate changes to our business processes, systems and controls to support the adoption of the new standard. Summary of Significant Accounting Policies Except for the accounting policies for leases and derivative instruments and hedging Summary of Significant Accounting Policies Leases We adopted ASC Topic 842, effective February 1, 2019, using the modified retrospective method. The reported results for fiscal year 2020 reflect the application of ASC Topic 842, while the reported results for prior fiscal years are not adjusted and continue to be reported under ASC Topic 840. Refer to Recently Adopted Accounting Pronouncements We determine whether an arrangement contains a lease at inception. A contract is or contains a lease if the contract conveys the right to control the use of an identified asset for a period of time in exchange for consideration. To determine whether a contract is or contains a lease, we consider all relevant facts and circumstances to assess whether the customer has both of the following: • The right to obtain substantially all of the economic benefits from use of the identified asset • The right to direct the use of the identified asset We recognize lease liabilities and right-of-use assets at lease commencement. We measure lease liabilities b ased on the present value of lease payments over the lease term discounted using the rate implicit in the lease when that rate is readily determinable or our incremental borrowing rate. We estimate our incremental borrowing rate based on an analysis of pub licly traded debt securities of companies with credit and financial profiles similar to our own and adjust our incremental borrowing rate to reflect the corresponding lease term. We do not include in the lease term options to extend or terminate the lease unless it is reasonably certain at commencement that we will exercise any such options. We account for the lease and non-lease components as a single lease component for all our leases. We measure right-of-use assets based on the corresponding lease liabilities adjusted for (i) prepayments made to the lessor at or before the commencement date, (ii) initial direct costs we incur, and (iii) tenant incentives under the lease. We evaluate the recoverability of our right-of-use assets for possible impairment in accordance with our long-lived assets policy. We do not recognize right-of-use assets or lease liabilities for short-term leases, which have a lease term of twelve months or less, recognize the associated lease payments in the condensed consolidated statements of Operating leases are reflected in operating lease right-of-use assets, operating lease liabilities, and operating lease liabilities, non-current on our condensed consolidated balance sheets. Finance leases are included in property and equipment, net, finance lease liabilities, and finance lease liabilities, non-current on our condensed consolidated balance sheets. We begin recognizing rent expense when the lessor makes the underlying asset available to us. We recognize rent expense under our operating leases on a straight-line basis. For finance leases, we record interest expense on the lease liability in addition to amortizing the right-of-use asset (generally straight-line) over the shorter of the lease term or the useful life of the right-of-use asset. Variable lease payments are expensed as incurred and are not included within the lease liabilities and right-of-use assets calculation. We generally recognize sublease income on a straight-line basis over the sublease term. Derivative Instruments and Hedging We measure derivative financial instruments at fair value and recognize them as either assets or liabilities on our condensed consolidated balance sheets. We record changes in the fair value of derivative financial instruments designated as cash flow hedges in other comprehensive income (loss). When the hedged transaction affects earnings, we subsequently reclassify the changes in fair value into the same line as the hedged item on the condensed consolidated statements of operations. The cash flow effects related to derivative financial instruments designated as cash flow hedges are included within operating activities on our condensed consolidated statements of cash flows.

Revenue

Revenue	9 Months Ended
	Oct. 31, 2019
Revenue From Contract With Customer [Abstract]
Revenue	Note 2. Revenue Contract Assets Contract assets, which are presented within accounts receivable, were not material as of October 31, 2019 and January 31, 2019. Deferred Revenue Deferred revenue was $325.6 million and $375.0 million as of October 31, 2019 and January 31, 2019, respectively. During the three months ended October 31, 2019 and 2018, we recognized Transaction Price Allocated to the Remaining Performance Obligations As of October 31, 2019, $636.0 million of revenue is expected to be recognized from remaining performance obligations for subscription contracts. We expect to recognize revenue on 68% of these remaining performance obligations over the next 12 months, with the balance recognized thereafter. Disaggregation of Revenues For both the three and nine months ended October 31, 2019, revenue attributable to customers in the United States was 75%. For the three and nine months ended October 31, 2018, revenue attributable to customers in the United States was 75% and 76%, respectively. For the three months ended October 31, 2019, revenue attributable to customers in Japan was 10%. No country outside of the United States comprised 10% or greater of our revenue for any of the other periods presented.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Oct. 31, 2019
Fair Value Disclosures [Abstract]
Fair Value Measurements	Note 3. Fair Value Measurements We define fair value as the exchange price that would be received from selling an asset or paid to transfer a liability in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. We measure our financial assets and liabilities at fair value at each reporting period using a fair value hierarchy which requires us to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. A financial instrument’s classification within the fair value hierarchy is based upon the lowest level of input that is significant to the fair value measurement. Three levels of inputs may be used to measure fair value: • Level 1—Observable inputs are unadjusted quoted prices in active markets for identical assets or liabilities. • Level 2—Observable inputs are quoted prices for similar assets and liabilities in active markets or inputs other than quoted prices which are observable for the assets or liabilities, either directly or indirectly through market corroboration, for substantially the full term of the financial instruments. • Level 3—Unobservable inputs that are supported by little or no market activity and are significant to the fair value of the assets or liabilities. These inputs are based on our own assumptions used to measure assets and liabilities at fair value and require significant management judgment or estimation. Investments Financial assets subject to the fair value disclosure requirements were as follows (in thousands): October 31, 2019 Level 1 Level 2 Level 3 Total Cash equivalents: Money market funds $ 32,388 $ — $ — $ 32,388 Certificates of deposit — 20,000 — 20,000 Total cash equivalents $ 32,388 $ 20,000 $ — $ 52,388 January 31, 2019 Level 1 Level 2 Level 3 Total Cash equivalents: Certificates of deposit $ — $ 50,056 $ — $ 50,056 Restricted cash: Certificates of deposit $ — $ 238 $ — $ 238 Derivative Instruments and Hedging In association with our debt described in Note 7, we are required to make variable rate interest payments based on a contractually specified interest rate index (e.g., LIBOR). The variable rate interest payments create interest rate risk as interest payments will fluctuate based on changes in the contractually specified interest rate index over the life of the loan. To minimize our risk exposure due to the volatility of the interest rate index, we entered into an interest rate swap agreement with Wells Fargo Bank, National Association, effective as of September 5, 2019 (“Swap Agreement”). This agreement, which is designated as a cash flow hedge, has a maturity of five years. Under the Swap Agreement, we have hedged a portion of the variable interest payments by effectively fixing our interest payments over the term of the agreement. As of October 31, 2019, our interest rate swap had a notional value of $30.0 million. We classify our interest rate swap hedge agreement within Level 2. As of October 31, 2019, the fair value of the interest rate swap, which is included in accrued expenses and other current liabilities in our condensed consolidated balance sheet, was not material. For the three and nine months ended October 31, 2019, changes in the fair value of the derivative financial instrument, which are recorded in other comprehensive loss, were not material.

Balance Sheet Components

Balance Sheet Components	9 Months Ended
	Oct. 31, 2019
Balance Sheet Related Disclosures [Abstract]
Balance Sheet Components	Note 4. Balance Sheet Components Prepaid Expenses and Other Current Assets Prepaid expenses and other current assets consisted of the following (in thousands): October 31, January 31, 2019 2019 Prepaid expenses $ 12,029 $ 9,323 Capitalized qualifying implementation costs incurred in a hosting arrangement that is a service contract, net (1) 1,318 1,663 Other current assets 5,212 3,237 Total prepaid expenses and other current assets $ 18,559 $ 14,223 (1) Net capitalized stock-based compensation expense and the amortization of the capitalized costs were not material for the periods presented. We have not recorded any related impairment charges during the periods presented. Property and Equipment, Net Property and equipment, net consisted of the following (in thousands): October 31, January 31, 2019 2019 Servers and related equipment $ 299,810 $ 215,626 Leasehold improvements 79,910 76,888 Computer hardware and software 22,669 20,614 Furniture and fixtures 14,211 13,661 Construction in progress 13,779 9,737 Total property and equipment 430,379 336,526 Less: accumulated depreciation (240,514 ) (198,823 ) Total property and equipment, net $ 189,865 $ 137,703 As of October 31, 2019, the gross carrying amount of property and equipment included $201.7 million of servers and related equipment and $12.4 million of construction in progress acquired under finance leases, and the accumulated depreciation of property and equipment acquired under these finance leases was $84.4 million. As of January 31, 2019, the gross carrying amount of property and equipment included $120.0 million of servers and related equipment and $8.8 million of construction in progress acquired under finance leases, and the accumulated depreciation of property and equipment acquired under these finance leases was $54.5 million. Depreciation expense related to property and equipment was $15.8 million and $11.4 million for the three months ended October 31, 2019 and 2018, respectively, and $41.7 million and $34.7 million for the nine months ended October 31, 2019 and 2018, respectively. Included in these amounts were depreciation expense for servers and related equipment acquired under finance leases in the amount of $11.7 million and $6.6 million for the three months ended October 31, 2019 and 2018, respectively, and $29.8 million and $19.0 million for the nine months ended October 31, 2019 and 2018, respectively. Construction in progress primarily consists of servers and networking equipment and storage infrastructure being provisioned in our data center facilities. Operating Lease Right-of-Use Assets, Net Operating lease right-of-use assets, net consisted of the following (in thousands): October 31, 2019 Operating lease right-of-use assets $ 230,371 Less: accumulated amortization (26,445 ) Operating lease right-of-use assets, net $ 203,926 Other Long-term Assets Other long-term assets consisted of the following (in thousands): October 31, January 31, 2019 2019 Deposits, non-current $ 2,741 $ 2,674 Internal-use software costs, net (1) 13,204 3,514 Other assets, non-current 3,826 4,858 Other long-term assets $ 19,771 $ 11,046 (1) Included in these amounts were $4.4 million and $0.8 million in net capitalized stock-based compensation expense as of the respective period. The amortization of the capitalized costs was not material for all periods. We have not recorded any material impairment charges during the periods presented.

Leases

Leases	9 Months Ended
	Oct. 31, 2019
Leases [Abstract]
Leases	Note 5. Leases We have entered into various non-cancellable operating lease agreements for certain of our offices and data centers with lease periods expiring primarily between fiscal years 2020 and 2029. Certain of these arrangements have free or escalating rent payment provisions and optional renewal or termination clauses. Our operating leases typically include variable lease payments, which are primarily comprised of common area maintenance and utility charges for our offices and power and network connections for our data centers, that are determined based on actual consumption. Our operating lease agreements do not contain any residual value guarantees, covenants, or other restrictions. We also entered into various finance lease arrangements to obtain servers and related equipment for our data center operations. These agreements are primarily for four years and certain of these arrangements have optional renewal or termination clauses. The leases are secured by the underlying leased servers and related equipment. We sublease certain floors of our Redwood City, San Francisco, and London offices. These subleases have terms ranging from 31 to 55 months that will expire at various dates by fiscal year 2023. The components of lease cost, which were included in operating expenses in our condensed consolidated statements of operations, were as follows (in thousands): Three Months Ended Nine Months Ended October 31, October 31, 2019 2019 Finance lease cost: Amortization of finance lease right-of-use assets $ 11,713 $ 29,823 Interest on finance lease liabilities 1,312 2,987 Operating lease cost, gross 12,300 36,533 Variable lease cost, gross 3,040 8,741 Sublease income (2,741 ) (8,327 ) Total lease cost (1) $ 25,624 $ 69,757 (1) Short-term lease cost for the three and nine months ended October 31, 2019 was not material and is not included in the table above. Supplemental cash flow information related to leases was as follows (in thousands): Three Months Ended Nine Months Ended October 31, October 31, 2019 2019 Cash paid for amounts included in the measurement of lease liabilities Operating cash flows for operating leases $ 11,562 $ 35,053 Operating cash flows for finance leases 802 2,531 Financing cash flows for finance leases 7,055 26,200 Right-of-use assets obtained in exchange of lease obligations (1) Operating leases 1,016 230,371 Finance leases 40,530 84,950 (1) Includes the adoption impact of ASC Topic 842 on the opening balance sheet as of February 1, 2019 as disclosed in Note 1. Supplemental information related to the remaining lease term and discount rate was as follows (in thousands): October 31, 2019 Weighted-average remaining lease term (in years) Operating leases 6.84 Finance leases 3.07 Weighted-average discount rate Operating leases 5.41 % Finance leases 4.29 % As of October 31, 2019, maturities of our operating and finance lease liabilities, which do not include short-term leases and variable lease payments, are as follows (in thousands): Years ending January 31: Operating Leases (1) Finance Leases Remainder of 2020 $ 14,577 $ 17,559 2021 51,175 48,240 2022 48,918 38,084 2023 39,241 29,160 2024 37,230 8,742 Thereafter 115,241 — Total lease payments $ 306,382 $ 141,785 Less: imputed interest (52,678 ) (9,842 ) Present value of total lease liabilities $ 253,704 $ 131,943 (1) Non-cancellable sublease proceeds for the remainder of the fiscal year ending January 31, 2020 and the fiscal years ending January 31, 2021, 2022, and 2023 of $1.4 million, $9.5 million, $7.1 million, and $6.1 million, respectively, are not included in the table above. As of October 31, 2019, we had operating leases for two of our data centers that have not yet commenced with aggregated undiscounted future payments of $17.2 million. These operating leases will commence in the later part of fiscal year 2020 and have lease terms ranging from 4 to 5 years and therefore, we did not reflect these on the condensed consolidated balance sheet as of October 31, 2019 and the tables above. We did not have any finance leases that have not yet commenced as of October 31, 2019. We establish assets and liabilities for the present value of estimated future costs to return certain of our leased facilities to their original condition. Such assets are depreciated over the lease period into operating expense, and the recorded liabilities are accreted to the future value of the estimated restoration costs. For the nine months ended October 31, 2019, we recorded $2.8 million in other long-term liabilities related to the present value of our estimated asset retirement obligation for our headquarters facility. We did not have material asset retirement obligations as of January 31, 2019. The accretion expense, which was included in operating expenses in our condensed consolidated statements of operations, was not material for all periods presented.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Oct. 31, 2019
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 6. Commitments and Contingencies Letters of Credit As of both October 31, 2019 and January 31, 2019, we had letters of credit in the aggregate amount of $26.5 million in connection with our operating leases, which were primarily issued under the available sublimit for the issuance of letters of credit in conjunction with a secured credit agreement as disclosed in Note 7. Purchase Obligations As of October 31, 2019, future payments under non-cancellable contractual purchases, which relate primarily to infrastructure services and IT software and support services costs Years ending January 31: 2020 $ 8,786 2021 12,003 2022 2,309 2023 34,011 2024 — Thereafter 165,800 $ 222,909 During the third quarter of fiscal year 2020, we entered into multiple contracts for infrastructure services and IT software, with terms ranging from 3 to 8 years, which have increased our purchase obligations in comparison to previous reporting periods. Legal Matters We are currently involved in, and may in the future be involved in, litigation and subject to claims that arise in the ordinary course of business, including matters we initiate to defend ourselves or our users by determining the scope, enforceability, and validity of third-party proprietary rights or to establish our proprietary rights. We investigate these claims as they arise and accrue estimates for resolution of legal and other contingencies when losses are probable and estimable. Although the results of litigation and claims cannot be predicted with certainty, we believe there was not at least a reasonable possibility that we had incurred a material loss with respect to such loss contingencies as of October 31, 2019. Additionally, litigation can have an adverse impact on us because of defense and settlement costs, diversion of management resources, and other factors, regardless of the outcome of such litigation. On June 6, 2019, a purported securities class action was filed in the U.S. District Court for the Northern District of California naming Box and certain of its officers and directors as defendants (the “Securities Class Action”). The complaint purports to bring suit on behalf of shareholders who purchased or otherwise acquired Box’s securities between November 28, 2018 and June 3, 2019. The complaint purports to allege that defendants made false and misleading statements about Box’s business and prospects in violation of Sections 10(b) and 20(a) of the Securities Exchange Act of 1934 and seeks unspecified compensatory damages, fees, and costs. We believe the claims are without merit and intend to defend against the lawsuit vigorously. On October 23, 2019, a shareholder derivative complaint was filed in the Superior Court of California, San Mateo County, purportedly on behalf of Box and naming as defendants certain current and former officers and directors. The complaint purports to allege claims for breach of fiduciary duty and unjust enrichment in connection with the same events alleged in the Securities Class Action and seeks, among other relief, unspecified monetary damages, attorneys’ fees, and costs. Because the litigation is in the early stages, we are unable to estimate a reasonably possible loss or range of loss, if any, that may result from this matter. We believe these claims are without merit and intend to defend against the lawsuits vigorously. Indemnification We include service level commitments to our customers warranting certain levels of uptime reliability and performance and permitting those customers to receive credits in the event that we fail to meet those levels. In addition, our customer contracts often include (i) specific obligations that we maintain the availability of the customer’s data through our service and that we secure customer content against unauthorized access or loss, and (ii) indemnity provisions whereby we indemnify our customers for third-party claims asserted against them that result from our failure to maintain the availability of their content or securing the same from unauthorized access or loss. To date, we have not incurred any material costs as a result of such commitments. Our arrangements generally include certain provisions for indemnifying customers against liabilities if our products or services infringe a third party’s intellectual property rights. It is not possible to determine the maximum potential amount under these indemnification obligations due to the limited history of prior indemnification claims and the unique facts and circumstances involved in each particular agreement. To date, we have not incurred any material costs as a result of such obligations and have not accrued any material liabilities related to such obligations in the condensed consolidated financial statements. In addition, we indemnify our officers, directors and certain key employees while they are serving in good faith in their respective capacities. To date, there have been no claims under any indemnification provisions.

Debt

Debt	9 Months Ended
	Oct. 31, 2019
Debt Disclosure [Abstract]
Debt	Note 7. Debt Line of Credit On November 27, 2017, we entered into a secured credit agreement with Wells Fargo Bank, National Association (as amended or otherwise modified from time to time, the “November 2017 Facility”) and in July 2019, we entered into Amendment No. 1 to the November 2017 Facility. Pursuant to the terms of the amendment, among other changes, (i) the maturity date of borrowings under the November 2017 Facility was extended from November 27, 2020 to July 12, 2022; (ii) the revolving commitments were increased from $85.0 million to $100.0 million; (iii) the sublimit for the issuance of letters of credit was increased from $30.0 million to $45.0 million; and (iv) the covenant in the November 2017 Facility that limits the amount of finance leases and debt that we can incur to finance the acquisition, construction or improvement of any equipment or capital assets was increased from $100.0 million to $200.0 million. The proceeds of the revolving loans may be used for general corporate purposes. The revolving loans accrue interest at a prime rate plus a margin of 0.25% or, at our option, a LIBOR rate (based on one, three or six-month interest periods) plus a margin of 1.00%. Interest on the revolving loans is payable quarterly in arrears with respect to loans based on the prime rate and at the end of an interest period in the case of loans based on the LIBOR rate (or at each three-month interval if the interest period is longer than three months). Borrowings under the November 2017 Facility are collateralized by substantially all of our assets. The November 2017 Facility requires us to comply with a maximum leverage ratio and a minimum liquidity requirement. Additionally, the November 2017 Facility contains customary affirmative and negative covenants, including covenants limiting our, and our subsidiaries’, ability to, among other things, grant liens, incur debt, pay dividends or distributions on the capital stock, effect certain mergers, make investments, dispose of assets and enter into transactions with affiliates, in each case subject to customary exceptions for a credit facility of the size and type of the November 2017 Facility. As of October 31, 2019, the outstanding borrowings under the credit facility were $40.0 million. As of October 31, 2019, we were in compliance with all financial covenants. In connection with the above credit facility, for the three and nine months ended October 31, 2019 and 2018, interest expense, net of capitalized interest costs, was not material. During the same periods, we did not capitalize any interest amounts. Interest expense in connection with the above credit facilities includes interest charges for our line of credit Effective September 5, 2019, we entered into a Swap Agreement with Wells Fargo Bank, National Association, in order to minimize our interest rate risk exposure due to the volatility of LIBOR. Under the Swap Agreement, we have hedged a portion of the variable interest payments of our debt by effectively fixing our interest payments over the five year term of the agreement. Refer to Note 3 for further details.

Stock-Based Compensation

Stock-Based Compensation	9 Months Ended
	Oct. 31, 2019
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock-Based Compensation	Note 8. Stock-Based Compensation 2015 Equity Incentive Plan In January 2015, our board of directors adopted the 2015 Equity Incentive Plan (“2015 Plan”), which became effective prior to the completion of our initial public offering (IPO). A total of 12,200,000 shares of Class A common stock was initially reserved for issuance pursuant to future awards under the 2015 Plan. On the first day of each fiscal year, shares available for issuance are increased based on the provisions of the 2015 Plan. Any shares subject to outstanding awards under our 2006 Equity Incentive Plan or 2011 Equity Incentive Plan that are cancelled or repurchased subsequent to the 2015 Plan’s effective date are returned to the pool of shares reserved for issuance under the 2015 Plan. Awards granted under the 2015 Plan may be (i) incentive stock options, (ii) nonstatutory stock options, (iii) restricted stock units, (iv) restricted stock awards or (v) stock appreciation rights, as determined by our board of directors at the time of grant. Generally, twenty-five percent of each grant of stock options and restricted stock units vest one year from the vesting commencement date and continue to vest (a) in the case of options, 1/48th 1/16th 2015 Employee Stock Purchase Plan In January 2015, our board of directors adopted the 2015 Employee Stock Purchase Plan (“2015 ESPP”), which became effective prior to the completion of our IPO. A total of 2,500,000 shares of Class A common stock was initially reserved for issuance under the 2015 ESPP. On the first day of each fiscal year, shares available for issuance are increased based on the provisions of the 2015 ESPP. The 2015 ESPP allows eligible employees to purchase shares of our Class A common stock at a discount of up to 15% through payroll deductions of their eligible compensation, subject to any plan limitations. The 2015 ESPP provides for 24-month offering periods beginning March 16 and September 16 of each year, and each offering period consists of four six-month purchase periods. On each purchase date, eligible employees may purchase our stock at a price per share equal to 85% of the lesser of (1) the fair market value of our stock on the offering date or (2) the fair market value of our stock on the purchase date. In the event the price is lower on the last day of any purchase price period, in addition to using that price as the basis for that purchase period, the offering period resets and the new lower price becomes the new offering price for a new 24 month offering period. As of October 31, 2019, 1,926,616 shares were reserved for future issuance under the 2015 ESPP. Stock Options The following table summarizes the stock option activity under the equity incentive plans and related information: Shares Weighted- Average Weighted- Remaining Average Exercise Contractual Life Aggregate Shares Price (Years) Intrinsic Value (in thousands) Balance as of January 31, 2019 9,096,961 $ 9.01 4.97 $ 108,731 Options granted 577,082 19.89 Options exercised (417,245 ) 7.21 Options forfeited/cancelled (60,972 ) 18.00 Balance as of October 31, 2019 9,195,826 $ 9.71 4.55 $ 72,392 Vested and expected to vest as of October 31, 2019 9,119,519 $ 9.63 4.51 $ 72,389 Exercisable as of October 31, 2019 7,579,160 $ 7.60 3.68 $ 72,342 The aggregate intrinsic value of options vested and expected to vest and exercisable as of October 31, 2019 is calculated based on the difference between the exercise price and the current fair value of our common stock. The aggregate intrinsic value of exercised options for the nine months ended October 31, 2019 and 2018 was $4.5 million and $27.5 million, respectively. The aggregate estimated fair value of stock options granted to employees that vested during the nine months ended October 31, 2019 and 2018 was $2.4 million and $5.6 million, respectively. The weighted-average grant date fair value of options granted to employees during the nine months ended October 31, 2019 and 2018 was $8.00 and $8.24 per share, respectively. As of October 31, 2019, there was $6.8 million of unrecognized stock-based compensation expense related to outstanding stock options granted to employees that is expected to be recognized over a weighted-average period of 2.44 years. Stock Options with Market-Based Performance Goals To further align our stockholders’ interests with executive officers’ interests, the Compensation Committee of our board of directors approved and granted performance-based stock options with market-based performance goals under the 2015 Plan to certain executive officers , which are subject to both the achievement of the market-based performance goal established by the Compensation Committee and the continued employment of the participant. These performance-based stock options vest only to the extent that both the market-based performance goal and time-based condition are satisfied. The market-based performance goal will be satisfied if, before the four-year anniversary of the grant date, the closing price of our Class A common stock is maintained at or above a pre-determined share price for a period of 30 consecutive trading days. The time-based vesting condition will be satisfied over the following four-year Twenty-five of the option’s time-based vesting condition is satisfied one year from the vesting commencement date and the remaining 1/48th The total outstanding performance-based stock options granted was 1,375,000 as of October 31, 2019. The grant date fair value of these awards was determined using a Monte Carlo valuation model and the related stock-based compensation expense is recognized based on an accelerated attribution method. Of the total $6.8 million in unrecognized stock-based compensation expense for stock options as of October 31, 2019, $4.0 million related to outstanding performance-based stock options with market-based performance goals, which is expected to be recognized over a weighted-average period of 3.01 years. Restricted Stock Units The following table summarizes the restricted stock unit activity under the equity incentive plans and related information: Number of Weighted- Restricted Average Stock Units Grant Date Outstanding Fair Value Unvested balance - January 31, 2019 18,098,707 $ 19.35 Granted 11,032,086 19.02 Vested, net of shares withheld for employee payroll taxes (3,275,859 ) 20.00 Forfeited/cancelled (3,320,045 ) 19.68 Unvested balance - October 31, 2019 22,534,889 $ 19.04 As of October 31, 2019, there was $304.6 million of unrecognized stock-based compensation expense related to outstanding restricted stock units granted to employees that is expected to be recognized over a weighted-average period of 2.84 years. Performance-Based Restricted Stock Units We use performance-based incentives for certain employees, including our named executive officers, to achieve our annual financial and operational objectives, while making progress towards our longer-term strategic and growth goals. Typically, near the beginning of each fiscal year, our Compensation Committee adopts the performance criteria and targets for the incentive compensation plan for that fiscal year, which identifies the plan participants, the performance measures and the associated target levels for each measure, and the potential payouts based on actual performance for the fiscal year. In the first quarter of fiscal year 2019, our Compensation Committee adopted and approved the performance criteria and targets for fiscal year 2019 under our omnibus Executive Incentive Plan (the “Fiscal 2019 Executive Bonus Plan”). Based on a review of our actual achievement of pre-established corporate financial objectives and additional inputs from our Compensation Committee, the Fiscal 2019 Executive Bonus Plan was determined, settled and paid out in the first quarter of fiscal year 2020 in a mixture of cash and equity compensation. In the first quarter of fiscal year 2020, our Compensation Committee adopted and approved the performance criteria and targets for fiscal year 2020 under our omnibus Executive Plan (the “Fiscal 2020 Executive Bonus Plan”). The Fiscal 2020 Executive Bonus Plan provides opportunities for 100% equity incentive compensation payouts based on our actual achievement of pre-established corporate financial objectives, subject to review and a final approval by our Compensation Committee. During the nine months ended October 31, 2019, we recognized stock-based compensation expense related to the Fiscal 2020 Executive Bonus Plan in the amount of $2.7 million. The unrecognized compensation expense related to the ungranted and unvested Fiscal 2020 Executive Bonus Plan is $1.8 million, based on the expected performance against the pre-established corporate financial objectives as of October 31, 2019, which is expected to be recognized over a weighted-average period of less than 1 year. The payouts of the Fiscal 2020 Executive Bonus Plan are expected to be made in the form of fully vested restricted stock units in the first quarter of fiscal year 2021. The number of restricted stock units each participant will receive is equal to the dollar value of his or her actual award payment divided by the average closing price of a share of our Class A common stock for the 30-trading day period ending the last trading date before the grant date 2015 ESPP As of October 31, 2019, there was $21.1 million of unrecognized stock-based compensation expense related to the 2015 ESPP that is expected to be recognized over the remaining term of the respective offering periods. During the first and third quarters of fiscal year 2020, the fair market value of our stock on the purchase date within each quarter (i.e., March 15, 2019 and September 15, 2019) was lower than the fair market value of our stock on certain offering dates. As a result, certain offering periods reset and the new lower price became the new offering price for a new 24 month offering period. These resets resulted in a change in fair value and a corresponding incremental stock-based compensation expense initially totaling $7.2 million and $3.3 million upon the first and third quarter reset, respectively, which are expected to be recognized over the terms of the new offering periods. Stock-Based Compensation The following table summarizes the components of stock-based compensation expense recognized in the condensed consolidated statements of operations (in thousands): Three Months Ended Nine Months Ended October 31, October 31, 2019 2018 2019 2018 Cost of revenue $ 4,428 $ 3,598 $ 12,399 $ 10,280 Research and development 16,653 12,043 44,878 33,668 Sales and marketing 9,250 9,708 28,644 27,701 General and administrative 7,427 6,441 21,004 17,437 Total stock-based compensation $ 37,758 $ 31,790 $ 106,925 $ 89,086 Determination of Fair Value We estimated the fair value of employee stock options and 2015 ESPP purchase rights using a Black-Scholes option pricing model with the following assumptions. Three Months Ended Nine Months Ended October 31, October 31, 2019 2018 2019 2018 Employee Stock Options Expected term (in years) N/A 5.8 5.5 - 5.8 5.5 - 5.8 Risk-free interest rate N/A 3.1 % 1.8 % 2.8 % - 3.1 % Volatility N/A 45 % 45 % 45 % Dividend yield N/A 0 % 0 % 0 % Employee Stock Purchase Plan Expected term (in years) 0.5 - 2.0 0.5 - 2.0 0.5 - 2.0 0.5 - 2.0 Risk-free interest rate 1.7 % - 1.9 % 2.3 % - 2.8 % 1.7 % - 2.5 % 2.0 % - 2.8 % Volatility 34 % - 47 % 40 % - 48 % 34 % - 55 % 37 % - 50 % Dividend yield 0 % 0 % 0 % 0 % The assumptions used in the Black-Scholes option pricing model were determined as follows: Fair Value of Common Stock . We use the market closing price for our Class A common stock as reported on the New York Stock Exchange to determine the fair value of our common stock at each grant date. Expected Term . The expected term represents the period that our share-based awards are expected to be outstanding. The expected term assumptions were determined based on the vesting terms, exercise terms and contractual lives of the options and 2015 ESPP purchase rights. Expected Volatility . We estimate the expected volatility of the stock option grants and 2015 ESPP purchase rights based on the historical volatility of our Class A common stock over a period equivalent to the expected term of the stock option grants and 2015 ESPP purchase rights, respectively. Risk-free Interest Rate . The risk-free rate that we use is based on the implied yield available on U.S. Treasury zero-coupon issues with remaining terms similar to the expected term on the options and 2015 ESPP purchase rights. Dividend Yield . We have never declared or paid any cash dividends and do not plan to pay cash dividends in the foreseeable future, and, therefore, use an expected dividend yield of zero.

Net Loss Per Share

Net Loss Per Share	9 Months Ended
	Oct. 31, 2019
Earnings Per Share [Abstract]
Net Loss per Share	Note 9. Net Loss per Share Material modification of rights of security holders On June 14, 2018, all of our outstanding shares of Class B common stock automatically converted into the same number of shares of Class A common stock pursuant to the terms of our Amended and Restated Certificate of Incorporation. No additional shares of Class B common stock will be issued following such conversion. The conversion occurred pursuant to Article IV of the Amended and Restated Certificate of Incorporation, which provided that each one share of Class B common stock would convert automatically, without any further action, into one share of Class A common stock on the first trading day falling on or after the date on which the outstanding shares of Class B common stock represent less than 5% of the aggregate number of shares of the then outstanding Class A common stock and Class B common stock. On June 15, 2018, we filed a certificate with the Secretary of State of the State of Delaware effecting the retirement and cancellation of our Class B common stock. This certificate of retirement had the additional effect of eliminating the authorized Class B common stock, thereby reducing the total number of our authorized shares of common stock by 200,000,000. Our Class A and Class B common stock are referred to as common stock throughout the notes to the financial statements, unless otherwise noted. After June 14, 2018, common stock refers to our Class A common stock. For periods where there were Class B shares outsta nding, we calculate our basic and diluted net loss per share in conformity with the two-class method required for companies with participating securities. Under the two-class method, basic net loss per share is calculated by dividing the net loss by the we ighted-average number of shares of common stock outstanding for the period, less shares subject to repurchase. The diluted net loss per share is computed by giving effect to all potential dilutive common stock equivalents outstanding for the period. For pu rposes of this calculation, options to purchase common stock, restricted stock units, shares issuable pursuant to our employee stock purchase plan, shares subject to repurchase from early exercised options and unvested restricted stock, and contingently is suable shares are considered common stock equivalents but have been excluded from the calculation of diluted net loss per share as their effect is antidilutive. The rights, including the liquidation and dividend rights, of the holders of our Class A and Class B common stock are identical, except with respect to voting and conversion. As the liquidation and dividend rights are identical, the undistributed earnings are allocated on a proportionate basis and the resulting net loss per share will, therefore, be the same for both Class A and Class B common stock on an individual or combined basis. We did not present dilutive net loss per share on an as-if converted basis because the impact was not dilutive. The following table sets forth the computation of basic and diluted net loss per share (in thousands, except per share amounts): Three Months Ended October 31, 2019 2018 Class A Class B Class A Class B Numerator: Net loss $ (40,896 ) $ — $ (40,196 ) $ — Denominator: Weighted-average number of shares outstanding—basic and diluted 148,555 — 142,366 — Net loss per share—basic and diluted $ (0.28 ) $ — $ (0.28 ) $ — Nine Months Ended October 31, 2019 2018 Class A Class B Class A Class B Numerator: Net loss $ (113,958 ) $ — $ (110,868 ) $ (4,050 ) Denominator: Weighted-average number of shares outstanding—basic and diluted 146,997 — 135,605 4,954 Net loss per share—basic and diluted $ (0.78 ) $ — $ (0.82 ) $ (0.82 ) The following weighted-average outstanding shares of common stock equivalents were excluded from the computation of diluted net loss per share for the periods presented because the impact of including them would have been antidilutive (in thousands): Three Months Ended October 31, Nine Months Ended October 31, 2019 2018 2019 2018 Options to purchase common stock 5,880 9,488 7,709 10,026 Restricted stock units 17,006 14,791 16,477 14,474 Employee stock purchase plan 2,035 1,679 1,244 1,131 24,921 25,958 25,430 25,631

Income Taxes

Income Taxes	9 Months Ended
	Oct. 31, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Note 10. Income Taxes We evaluate tax positions for recognition using a more-likely-than-not recognition threshold, and those tax positions eligible for recognition are measured as the largest amount of tax benefit that is greater than 50% likely of being realized upon the effective settlement with a taxing authority that has full knowledge of all relevant information. We believe that we have provided adequate reserves for our income tax uncertainties in all open tax years. We file tax returns in the U.S. for federal, California, and other states. All tax years remain open to examination for both federal and state purposes as a result of our net operating loss and credit carryforwards. We began to file foreign tax returns in the United Kingdom starting with the year ended January 31, 2013, in France, Germany and Japan starting with the year ended January 31, 2014, in Canada starting with the year ended January 31, 2015, and in Australia, Sweden, and Netherlands starting with the year ended January 31, 2016. Certain tax years remain open to examination.

Segments

Segments	9 Months Ended
	Oct. 31, 2019
Segment Reporting [Abstract]
Segments	Note 11. Segments Our chief operating decision maker reviews financial information presented on a consolidated basis for purposes of allocating resources and evaluating financial performance. As such, we have a single reporting segment and operating unit structure. Since we operate in one operating segment, all required segment information can be found in the condensed consolidated financial statements.

Description of Business and B_2

Description of Business and Basis of Presentation (Policies)	9 Months Ended
	Oct. 31, 2019
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The accompanying condensed consolidated balance sheet as of October 31, 2019 and the condensed consolidated statements of operations, the condensed consolidated statements of comprehensive loss, the condensed consolidated statements of stockholders’ equity, and the condensed consolidated statements of cash flows for the three and nine months ended October 31, 2019 and 2018, respectively, are unaudited. The condensed consolidated balance sheet data as of January 31, 2019 was derived from the audited consolidated financial statements that are included in our Annual Report on Form 10-K for the fiscal year ended January 31, 2019 (the “Form 10-K”), which was filed with the Securities and Exchange Commission (the “SEC”) on March 20, 2019. The accompanying statements should be read in conjunction with the audited consolidated financial statements and related notes contained in our Form 10-K. Other than items discussed under Use of Estimates , Recently Adopted Accounting Pronouncements , and Summary of Significant Accounting Policies , there have been no other material changes to our critical accounting policies and estimates during the nine months ended October 31, 2019 from those disclosed in Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations in our Form 10-K. The accompanying condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) for interim financial information. Accordingly, they do not include all of the financial information and footnotes required by U.S. GAAP for complete financial statements. In the opinion of our management, the unaudited condensed consolidated financial statements have been prepared on the same basis as the audited consolidated financial statements in the Form 10-K, and include all adjustments necessary for the fair presentation of our balance sheet as of October 31, 2019, and our results of operations, including our comprehensive loss, our stockholders’ equity, and our cash flows for the three and nine months ended October 31, 2019 and 2018. All adjustments are of a normal recurring nature. The results for the three and nine months ended October 31, 2019 are not necessarily indicative of the results to be expected for any subsequent quarter or for the fiscal year ending January 31, 2020. Certain prior period amounts reported in our condensed consolidated financial statements and notes thereto have been reclassified to conform to the current year presentation. Such reclassifications did not affect total revenues, operating income, or net income.
Use of Estimates	Use of Estimates The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make, on an ongoing basis, estimates and assumptions that affect the amounts reported and disclosed in the financial statements and the accompanying notes. Actual results could differ from these estimates. Such estimates include, but are not limited to, the determination of the allowance for accounts receivable, fair value of acquired intangible assets and goodwill, useful lives of acquired intangible assets and property and equipment, timing and costs associated with our asset retirement obligations, the nature and timing of satisfaction of performance obligations, estimate of standalone selling price allocation included in contracts with multiple performance obligations, the estimated expected benefit period for deferred commissions, the estimated useful life of capitalized internal-use software costs, observable price changes of , the incremental borrowing rate we use to determine our lease liabilities,
Certain Risks and Concentrations	Certain Risks and Concentrations Our financial instruments that are exposed to concentrations of credit risk consist primarily of cash and cash equivalents and accounts receivable. Although we deposit our cash with multiple financial institutions, our deposits, at times, may exceed deposit insurance coverage limits. We sell to a broad range of customers. Our revenue is derived substantially from the United States across a multitude of industries. Accounts receivable are derived from the delivery of our services to customers primarily located in the United States. We accept and settle our accounts receivable using credit cards, electronic payments and checks. A majority of our lower dollar value invoices are settled by credit card on or near the date of the invoice. We do not require collateral from customers to secure accounts receivable. We maintain an allowance for doubtful accounts based upon the expected collectability, which takes into consideration specific customer creditworthiness and current economic trends. We believe collections of our accounts receivable are probable based on the size, industry diversification, financial condition and past transaction history of our customers. As of October 31, 2019 and January 31, 2019, one reseller, which is also a customer, accounted for more than 10% of total accounts receivable. One reseller, which is also a customer, represented 10% of our revenue for the three and nine months ended October 31, 2019. One reseller, which is also a customer, represented 12% of our revenue for the three and nine months ended October 31, 2018. We serve our customers and users from data center facilities operated by third parties. In order to reduce the risk of down time of our subscription services, we have established data centers and third-party cloud computing and hosting providers in various locations in the United States and abroad. We have internal procedures to restore services in the event of disaster at any one of our current data center facilities. Even with these procedures for disaster recovery in place, our cloud services could be significantly interrupted during the implementation of the procedures to restore services. Geographic Locations For both the three and nine months ended October 31, 2019, revenue attributable to customers in the United States was 75% Substantially all of our net assets are located in the United States. As of October 31, 2019 and January 31, 2019, property and equipment located in the United States was approximately 94% and 91%, respectively.
Recently Adopted and Issued Accounting Pronouncements	Recently Adopted Accounting Pronouncements In February 2016, the FASB issued ASU 2016-02, Leases, Adoption Impact of ASC Topic 842 on th e Opening Balance Sheet as of February 1, 2019 In connection with the adoption of ASC Topic 842, we recognized operating lease right-of-use assets and operating lease liabilities on our condensed consolidated balance sheet primarily related to our office and data center facilities of $206.6 million and $255.0 million, respectively, out of which $218.6 million was the non-current portion of operating lease liabilities. The difference between the operating lease right-of-use assets and operating lease liabilities primarily represents the existing deferred rent liability balance as of the adoption date. Our accounting for finance leases remains substantially unchanged from the legacy ASC Topic 840 except for the impacts of applying the practical expedient to not separate lease and non-lease components. As a result of recognizing the non-lease components as part of our finance leases, we recognized finance lease right-of-use assets and corresponding finance leases liabilities of $5.2 million, out of which $2.9 million represented the non-current portion of the additional finance lease liabilities. As a sub-lessor, accounting for our subleases is largely unchanged from the legacy ASC Topic 840. The adoption of ASC Topic 842 did not have a material effect on our condensed consolidated statements of operations and cash flows, however, it did materially increase our assets and liabilities on the condensed consolidated balance sheet. The adoption of ASC Topic 842 resulted in changes to our accounting estimates and accounting policy for leases. Please see Summary of Significant Accounting Policies Ongoing ASC Topic 842 Financial Statement Impact as of and for the three and nine months ended October 31, 2019 Refer to “ Note 4. Balance Sheet Components ” and “ Note 5. Leases ” for the ongoing ASC Topic 842 impact on the condensed consolidated financial statements as of and for the three and nine months ended October 31, 2019. Recently Issued Accounting Pronouncements In June 2016, the FASB issued ASU 2016-13, Financial Instruments- Credit Losses have elected not to adopt the standard earlier. We are in the process of evaluating appropriate changes to our business processes, systems and controls to support the adoption of the new standard.
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Except for the accounting policies for leases and derivative instruments and hedging Summary of Significant Accounting Policies
Leases	Leases We adopted ASC Topic 842, effective February 1, 2019, using the modified retrospective method. The reported results for fiscal year 2020 reflect the application of ASC Topic 842, while the reported results for prior fiscal years are not adjusted and continue to be reported under ASC Topic 840. Refer to Recently Adopted Accounting Pronouncements We determine whether an arrangement contains a lease at inception. A contract is or contains a lease if the contract conveys the right to control the use of an identified asset for a period of time in exchange for consideration. To determine whether a contract is or contains a lease, we consider all relevant facts and circumstances to assess whether the customer has both of the following: • The right to obtain substantially all of the economic benefits from use of the identified asset • The right to direct the use of the identified asset We recognize lease liabilities and right-of-use assets at lease commencement. We measure lease liabilities b ased on the present value of lease payments over the lease term discounted using the rate implicit in the lease when that rate is readily determinable or our incremental borrowing rate. We estimate our incremental borrowing rate based on an analysis of pub licly traded debt securities of companies with credit and financial profiles similar to our own and adjust our incremental borrowing rate to reflect the corresponding lease term. We do not include in the lease term options to extend or terminate the lease unless it is reasonably certain at commencement that we will exercise any such options. We account for the lease and non-lease components as a single lease component for all our leases. We measure right-of-use assets based on the corresponding lease liabilities adjusted for (i) prepayments made to the lessor at or before the commencement date, (ii) initial direct costs we incur, and (iii) tenant incentives under the lease. We evaluate the recoverability of our right-of-use assets for possible impairment in accordance with our long-lived assets policy. We do not recognize right-of-use assets or lease liabilities for short-term leases, which have a lease term of twelve months or less, recognize the associated lease payments in the condensed consolidated statements of Operating leases are reflected in operating lease right-of-use assets, operating lease liabilities, and operating lease liabilities, non-current on our condensed consolidated balance sheets. Finance leases are included in property and equipment, net, finance lease liabilities, and finance lease liabilities, non-current on our condensed consolidated balance sheets. We begin recognizing rent expense when the lessor makes the underlying asset available to us. We recognize rent expense under our operating leases on a straight-line basis. For finance leases, we record interest expense on the lease liability in addition to amortizing the right-of-use asset (generally straight-line) over the shorter of the lease term or the useful life of the right-of-use asset. Variable lease payments are expensed as incurred and are not included within the lease liabilities and right-of-use assets calculation. We generally recognize sublease income on a straight-line basis over the sublease term.
Derivative Instruments and Hedging	Derivative Instruments and Hedging We measure derivative financial instruments at fair value and recognize them as either assets or liabilities on our condensed consolidated balance sheets. We record changes in the fair value of derivative financial instruments designated as cash flow hedges in other comprehensive income (loss). When the hedged transaction affects earnings, we subsequently reclassify the changes in fair value into the same line as the hedged item on the condensed consolidated statements of operations. The cash flow effects related to derivative financial instruments designated as cash flow hedges are included within operating activities on our condensed consolidated statements of cash flows.
Stock-Based Compensation	The assumptions used in the Black-Scholes option pricing model were determined as follows: Fair Value of Common Stock . We use the market closing price for our Class A common stock as reported on the New York Stock Exchange to determine the fair value of our common stock at each grant date. Expected Term . The expected term represents the period that our share-based awards are expected to be outstanding. The expected term assumptions were determined based on the vesting terms, exercise terms and contractual lives of the options and 2015 ESPP purchase rights. Expected Volatility . We estimate the expected volatility of the stock option grants and 2015 ESPP purchase rights based on the historical volatility of our Class A common stock over a period equivalent to the expected term of the stock option grants and 2015 ESPP purchase rights, respectively. Risk-free Interest Rate . The risk-free rate that we use is based on the implied yield available on U.S. Treasury zero-coupon issues with remaining terms similar to the expected term on the options and 2015 ESPP purchase rights. Dividend Yield . We have never declared or paid any cash dividends and do not plan to pay cash dividends in the foreseeable future, and, therefore, use an expected dividend yield of zero.

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Oct. 31, 2019
Fair Value Disclosures [Abstract]
Summary of Financial Assets Subject to Fair Value	Financial assets subject to the fair value disclosure requirements were as follows (in thousands): October 31, 2019 Level 1 Level 2 Level 3 Total Cash equivalents: Money market funds $ 32,388 $ — $ — $ 32,388 Certificates of deposit — 20,000 — 20,000 Total cash equivalents $ 32,388 $ 20,000 $ — $ 52,388 January 31, 2019 Level 1 Level 2 Level 3 Total Cash equivalents: Certificates of deposit $ — $ 50,056 $ — $ 50,056 Restricted cash: Certificates of deposit $ — $ 238 $ — $ 238

Balance Sheet Components (Table

Balance Sheet Components (Tables)	9 Months Ended
	Oct. 31, 2019
Balance Sheet Related Disclosures [Abstract]
Schedule of Prepaid Expenses and Other Current Assets	Prepaid expenses and other current assets consisted of the following (in thousands): October 31, January 31, 2019 2019 Prepaid expenses $ 12,029 $ 9,323 Capitalized qualifying implementation costs incurred in a hosting arrangement that is a service contract, net (1) 1,318 1,663 Other current assets 5,212 3,237 Total prepaid expenses and other current assets $ 18,559 $ 14,223 (1) Net capitalized stock-based compensation expense and the amortization of the capitalized costs were not material for the periods presented. We have not recorded any related impairment charges during the periods presented.
Schedule of Property and Equipment, Net	Property and equipment, net consisted of the following (in thousands): October 31, January 31, 2019 2019 Servers and related equipment $ 299,810 $ 215,626 Leasehold improvements 79,910 76,888 Computer hardware and software 22,669 20,614 Furniture and fixtures 14,211 13,661 Construction in progress 13,779 9,737 Total property and equipment 430,379 336,526 Less: accumulated depreciation (240,514 ) (198,823 ) Total property and equipment, net $ 189,865 $ 137,703
Schedule of Operating Lease Right-of-Use Assets, Net	Operating lease right-of-use assets, net consisted of the following (in thousands): October 31, 2019 Operating lease right-of-use assets $ 230,371 Less: accumulated amortization (26,445 ) Operating lease right-of-use assets, net $ 203,926
Schedule of Other Long-Term Assets	Other long-term assets consisted of the following (in thousands): October 31, January 31, 2019 2019 Deposits, non-current $ 2,741 $ 2,674 Internal-use software costs, net (1) 13,204 3,514 Other assets, non-current 3,826 4,858 Other long-term assets $ 19,771 $ 11,046 (1) Included in these amounts were $4.4 million and $0.8 million in net capitalized stock-based compensation expense as of the respective period. The amortization of the capitalized costs was not material for all periods. We have not recorded any material impairment charges during the periods presented.

Leases (Tables)

Leases (Tables)	9 Months Ended
	Oct. 31, 2019
Leases [Abstract]
Summary of Components of Lease Cost, Supplemental Cash Flow Information and Supplemental Information Related to Remaining Lease Term and Discount Rate	The components of lease cost, which were included in operating expenses in our condensed consolidated statements of operations, were as follows (in thousands): Three Months Ended Nine Months Ended October 31, October 31, 2019 2019 Finance lease cost: Amortization of finance lease right-of-use assets $ 11,713 $ 29,823 Interest on finance lease liabilities 1,312 2,987 Operating lease cost, gross 12,300 36,533 Variable lease cost, gross 3,040 8,741 Sublease income (2,741 ) (8,327 ) Total lease cost (1) $ 25,624 $ 69,757 (1) Short-term lease cost for the three and nine months ended October 31, 2019 was not material and is not included in the table above. Supplemental cash flow information related to leases was as follows (in thousands): Three Months Ended Nine Months Ended October 31, October 31, 2019 2019 Cash paid for amounts included in the measurement of lease liabilities Operating cash flows for operating leases $ 11,562 $ 35,053 Operating cash flows for finance leases 802 2,531 Financing cash flows for finance leases 7,055 26,200 Right-of-use assets obtained in exchange of lease obligations (1) Operating leases 1,016 230,371 Finance leases 40,530 84,950 (1) Includes the adoption impact of ASC Topic 842 on the opening balance sheet as of February 1, 2019 as disclosed in Note 1. Supplemental information related to the remaining lease term and discount rate was as follows (in thousands): October 31, 2019 Weighted-average remaining lease term (in years) Operating leases 6.84 Finance leases 3.07 Weighted-average discount rate Operating leases 5.41 % Finance leases 4.29 %
Summary of Maturities of Operating and Finance Lease Liabilities	As of October 31, 2019, maturities of our operating and finance lease liabilities, which do not include short-term leases and variable lease payments, are as follows (in thousands): Years ending January 31: Operating Leases (1) Finance Leases Remainder of 2020 $ 14,577 $ 17,559 2021 51,175 48,240 2022 48,918 38,084 2023 39,241 29,160 2024 37,230 8,742 Thereafter 115,241 — Total lease payments $ 306,382 $ 141,785 Less: imputed interest (52,678 ) (9,842 ) Present value of total lease liabilities $ 253,704 $ 131,943 (1) Non-cancellable sublease proceeds for the remainder of the fiscal year ending January 31, 2020 and the fiscal years ending January 31, 2021, 2022, and 2023 of $1.4 million, $9.5 million, $7.1 million, and $6.1 million, respectively, are not included in the table above.

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Oct. 31, 2019
Commitments And Contingencies Disclosure [Abstract]
Future Payments under Non-cancellable Contractual Purchases	As of October 31, 2019, future payments under non-cancellable contractual purchases, which relate primarily to infrastructure services and IT software and support services costs Years ending January 31: 2020 $ 8,786 2021 12,003 2022 2,309 2023 34,011 2024 — Thereafter 165,800 $ 222,909

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	9 Months Ended
	Oct. 31, 2019
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Summary of Stock Option Activity Under Equity Incentive Plans and Related Information	The following table summarizes the stock option activity under the equity incentive plans and related information: Shares Weighted- Average Weighted- Remaining Average Exercise Contractual Life Aggregate Shares Price (Years) Intrinsic Value (in thousands) Balance as of January 31, 2019 9,096,961 $ 9.01 4.97 $ 108,731 Options granted 577,082 19.89 Options exercised (417,245 ) 7.21 Options forfeited/cancelled (60,972 ) 18.00 Balance as of October 31, 2019 9,195,826 $ 9.71 4.55 $ 72,392 Vested and expected to vest as of October 31, 2019 9,119,519 $ 9.63 4.51 $ 72,389 Exercisable as of October 31, 2019 7,579,160 $ 7.60 3.68 $ 72,342
Summary of Restricted Stock Unit Activity Under Equity Incentive Plans and Related Information	The following table summarizes the restricted stock unit activity under the equity incentive plans and related information: Number of Weighted- Restricted Average Stock Units Grant Date Outstanding Fair Value Unvested balance - January 31, 2019 18,098,707 $ 19.35 Granted 11,032,086 19.02 Vested, net of shares withheld for employee payroll taxes (3,275,859 ) 20.00 Forfeited/cancelled (3,320,045 ) 19.68 Unvested balance - October 31, 2019 22,534,889 $ 19.04
Summary of Components of Stock-Based Compensation Expense	The following table summarizes the components of stock-based compensation expense recognized in the condensed consolidated statements of operations (in thousands): Three Months Ended Nine Months Ended October 31, October 31, 2019 2018 2019 2018 Cost of revenue $ 4,428 $ 3,598 $ 12,399 $ 10,280 Research and development 16,653 12,043 44,878 33,668 Sales and marketing 9,250 9,708 28,644 27,701 General and administrative 7,427 6,441 21,004 17,437 Total stock-based compensation $ 37,758 $ 31,790 $ 106,925 $ 89,086
Summary of Estimated Fair Value of Employee Stock Options and 2015 ESPP	We estimated the fair value of employee stock options and 2015 ESPP purchase rights using a Black-Scholes option pricing model with the following assumptions. Three Months Ended Nine Months Ended October 31, October 31, 2019 2018 2019 2018 Employee Stock Options Expected term (in years) N/A 5.8 5.5 - 5.8 5.5 - 5.8 Risk-free interest rate N/A 3.1 % 1.8 % 2.8 % - 3.1 % Volatility N/A 45 % 45 % 45 % Dividend yield N/A 0 % 0 % 0 % Employee Stock Purchase Plan Expected term (in years) 0.5 - 2.0 0.5 - 2.0 0.5 - 2.0 0.5 - 2.0 Risk-free interest rate 1.7 % - 1.9 % 2.3 % - 2.8 % 1.7 % - 2.5 % 2.0 % - 2.8 % Volatility 34 % - 47 % 40 % - 48 % 34 % - 55 % 37 % - 50 % Dividend yield 0 % 0 % 0 % 0 %

Net Loss Per Share (Tables)

Net Loss Per Share (Tables)	9 Months Ended
	Oct. 31, 2019
Earnings Per Share [Abstract]
Summary of Computation of Basic and Diluted Net Loss Per Share	The following table sets forth the computation of basic and diluted net loss per share (in thousands, except per share amounts): Three Months Ended October 31, 2019 2018 Class A Class B Class A Class B Numerator: Net loss $ (40,896 ) $ — $ (40,196 ) $ — Denominator: Weighted-average number of shares outstanding—basic and diluted 148,555 — 142,366 — Net loss per share—basic and diluted $ (0.28 ) $ — $ (0.28 ) $ — Nine Months Ended October 31, 2019 2018 Class A Class B Class A Class B Numerator: Net loss $ (113,958 ) $ — $ (110,868 ) $ (4,050 ) Denominator: Weighted-average number of shares outstanding—basic and diluted 146,997 — 135,605 4,954 Net loss per share—basic and diluted $ (0.78 ) $ — $ (0.82 ) $ (0.82 )
Summary of Weighted Average Outstanding Shares Excluded from Computation of Diluted Net Loss per Share	The following weighted-average outstanding shares of common stock equivalents were excluded from the computation of diluted net loss per share for the periods presented because the impact of including them would have been antidilutive (in thousands): Three Months Ended October 31, Nine Months Ended October 31, 2019 2018 2019 2018 Options to purchase common stock 5,880 9,488 7,709 10,026 Restricted stock units 17,006 14,791 16,477 14,474 Employee stock purchase plan 2,035 1,679 1,244 1,131 24,921 25,958 25,430 25,631

Description of Business and B_3

Description of Business and Basis of Presentation - Additional Information (Details) - USD ($) $ in Thousands		3 Months Ended			9 Months Ended			12 Months Ended
		Oct. 31, 2019		Oct. 31, 2018	Oct. 31, 2019		Oct. 31, 2018	Jan. 31, 2019
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Operating lease right-of-use assets	[1]	$ 203,926			$ 203,926
Operating lease liabilities	[2]	253,704			253,704
Non-current portion of operating lease liabilities	[1]	213,369			213,369
Finance leases liabilities		131,943			131,943
Non-current portion of the additional finance lease liabilities		82,637	[1]		82,637	[1]		$ 44,597	[3]
Accounting Standards Update 2016-02
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Operating lease right-of-use assets		206,600			206,600
Operating lease liabilities		255,000			255,000
Non-current portion of operating lease liabilities		218,600			218,600
Finance lease right-of-use assets		5,200			5,200
Finance leases liabilities		5,200			5,200
Non-current portion of the additional finance lease liabilities		$ 2,900			$ 2,900
Credit Concentration Risk | Accounts Receivable
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Number of major customers					one			one
Concentration risk percentage					10.00%			10.00%
Customer Concentration Risk | Revenue
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Number of major customers		One		One	One		One
Concentration risk percentage		10.00%		12.00%	10.00%		12.00%
Geographic Concentration Risk | Revenue | United States
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Concentration risk percentage		75.00%		75.00%	75.00%		76.00%
Geographic Concentration Risk | Revenue | Japan
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Concentration risk percentage		10.00%
Geographic Concentration Risk | Property and Equipment | United States
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Concentration risk percentage					94.00%			91.00%
[1]	As reported and disclosed under ASC Topic 842
[2]	Non-cancellable sublease proceeds for the remainder of the fiscal year ending January 31, 2020 and the fiscal years ending January 31, 2021, 2022, and 2023 of $1.4 million, $9.5 million, $7.1 million, and $6.1 million, respectively, are not included in the table above.
[3]	As reported and disclosed under ASC Topic 840

Revenues - Additional Informati

Revenues - Additional Information (Details) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2019USD ($)	Oct. 31, 2018USD ($)Country	Oct. 31, 2019USD ($)Country	Oct. 31, 2018USD ($)Country	Jan. 31, 2019USD ($)
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Deferred revenue	$ 325.6		$ 325.6		$ 375
Deferred revenue, revenue recognized out of beginning balance	141.5	$ 120.1	315.9	$ 252.1
Remaining performance obligation, revenue expected to be recognized	$ 636		$ 636
Revenue remaining performance obligation, percentage	68.00%		68.00%
Customer Concentration Risk | Revenue
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Concentration risk percentage	10.00%	12.00%	10.00%	12.00%
Customer Concentration Risk | United States | Revenue
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Concentration risk percentage	75.00%	75.00%	75.00%	76.00%
Customer Concentration Risk | Japan | Revenue
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Concentration risk percentage	10.00%
Customer Concentration Risk | Outside United States | Revenue
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Number of countries outside domestic that contributes more than concentration threshold | Country		0	0	0

Revenues - Additional Informa_2

Revenues - Additional Information (Details 1)	Oct. 31, 2019
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2019-11-01
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period	12 months

Fair Value Measurements - Summa

Fair Value Measurements - Summary of Financial Assets Subject to Fair Value (Details) - Recurring - USD ($) $ in Thousands	Oct. 31, 2019	Jan. 31, 2019
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total cash equivalents	$ 52,388
Money Market Funds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total cash equivalents	32,388
Certificates of Deposit
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total cash equivalents	20,000	$ 50,056
Restricted cash		238
Level 1
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total cash equivalents	32,388
Level 1 | Money Market Funds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total cash equivalents	32,388
Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total cash equivalents	20,000
Level 2 | Certificates of Deposit
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total cash equivalents	$ 20,000	50,056
Restricted cash		$ 238

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Details) - Interest Rate Swap $ in Millions	9 Months Ended
	Oct. 31, 2019USD ($)
Derivative [Line Items]
Derivative, effective date	Sep. 5, 2019
Derivative, maturity period	5 years
Derivative, notional value	$ 30

Balance Sheet Components - Sche

Balance Sheet Components - Schedule of Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands		Oct. 31, 2019		Jan. 31, 2019
Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]
Prepaid expenses		$ 12,029		$ 9,323
Capitalized qualifying implementation costs incurred in a hosting arrangement that is a service contract, net	[1]	1,318		1,663
Other current assets		5,212		3,237
Total prepaid expenses and other current assets		$ 18,559	[2]	$ 14,223	[3]
[1]	Net capitalized stock-based compensation expense and the amortization of the capitalized costs were not material for the periods presented. We have not recorded any related impairment charges during the periods presented.
[2]	As reported and disclosed under ASC Topic 842
[3]	As reported and disclosed under ASC Topic 840

Balance Sheet Components - Sc_2

Balance Sheet Components - Schedule of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Oct. 31, 2019		Jan. 31, 2019
Property Plant And Equipment [Line Items]
Total property and equipment, gross	$ 430,379		$ 336,526
Less: accumulated depreciation	(240,514)		(198,823)
Total property and equipment, net	189,865	[1]	137,703	[2]
Servers and related equipment
Property Plant And Equipment [Line Items]
Total property and equipment, gross	299,810		215,626
Leasehold improvements
Property Plant And Equipment [Line Items]
Total property and equipment, gross	79,910		76,888
Computer hardware and software
Property Plant And Equipment [Line Items]
Total property and equipment, gross	22,669		20,614
Furniture and fixtures
Property Plant And Equipment [Line Items]
Total property and equipment, gross	14,211		13,661
Construction in progress
Property Plant And Equipment [Line Items]
Total property and equipment, gross	$ 13,779		$ 9,737
[1]	As reported and disclosed under ASC Topic 842
[2]	As reported and disclosed under ASC Topic 840

Balance Sheet Components - Addi

Balance Sheet Components - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018	Jan. 31, 2019
Property Plant And Equipment [Line Items]
Accumulated depreciation of property and equipment acquired under finance lease	$ 84.4		$ 84.4		$ 54.5
Depreciation expense	15.8	$ 11.4	41.7	$ 34.7
Servers and related equipment
Property Plant And Equipment [Line Items]
Gross amount of property and equipment acquired under finance lease	201.7		201.7		120
Depreciation expense	11.7	$ 6.6	29.8	$ 19
Construction in progress
Property Plant And Equipment [Line Items]
Gross amount of property and equipment acquired under finance lease	$ 12.4		$ 12.4		$ 8.8

Balance Sheet Components - Sc_3

Balance Sheet Components - Schedule of Operating Lease Right-of-Use Assets, Net (Details) $ in Thousands	Oct. 31, 2019USD ($)
Balance Sheet Related Disclosures [Abstract]
Operating lease right-of-use assets	$ 230,371
Less: accumulated amortization	(26,445)
Operating lease right-of-use assets, net	$ 203,926	[1]
[1]	As reported and disclosed under ASC Topic 842

Balance Sheet Components - Sc_4

Balance Sheet Components - Schedule of Other Long-Term Assets (Details) - USD ($) $ in Thousands		Oct. 31, 2019		Jan. 31, 2019
Assets Noncurrent [Abstract]
Deposits, non-current		$ 2,741		$ 2,674
Internal-use software costs, net	[1]	13,204		3,514
Other assets, non-current		3,826		4,858
Other long-term assets		$ 19,771	[2]	$ 11,046	[3]
[1]	Included in these amounts were $4.4 million and $0.8 million in net capitalized stock-based compensation expense as of the respective period. The amortization of the capitalized costs was not material for all periods. We have not recorded any material impairment charges during the periods presented.
[2]	As reported and disclosed under ASC Topic 842
[3]	As reported and disclosed under ASC Topic 840

Balance Sheet Components - Sc_5

Balance Sheet Components - Schedule of Other Long-Term Assets (Parenthetical) (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Oct. 31, 2019	Jan. 31, 2019
Property Plant And Equipment [Abstract]
Capitalized stock-based compensation expenses	$ 4.4	$ 0.8

Leases - Additional Information

Leases - Additional Information (Details) - USD ($)	9 Months Ended
	Oct. 31, 2019	Jan. 31, 2019
Lessee Lease Description [Line Items]
Finance lease agreements term	4 years
Sublease expiration year	2023
Operating leases, undiscounted future payments	$ 17,200,000
Finance lease,not yet commenced	0
Asset retirement obligation		$ 0
Other Long-term Liabilities
Lessee Lease Description [Line Items]
Asset retirement obligation	$ 2,800,000
Minimum
Lessee Lease Description [Line Items]
Operating lease expiration year	2020
Term of sublease arrangement	31 months
Operating lease has not yet commenced lease term	4 years
Maximum
Lessee Lease Description [Line Items]
Operating lease expiration year	2029
Term of sublease arrangement	55 months
Operating lease has not yet commenced lease term	5 years

Leases - Schedule of Lease Cost

Leases - Schedule of Lease Cost Included In Operating Expenses in Condensed Consolidated Statements of Operations (Details) - USD ($) $ in Thousands		3 Months Ended	9 Months Ended
		Oct. 31, 2019	Oct. 31, 2019
Finance lease cost:
Amortization of finance lease right-of-use assets		$ 11,713	$ 29,823
Interest on finance lease liabilities		1,312	2,987
Operating lease cost, gross		12,300	36,533
Variable lease cost, gross		3,040	8,741
Sublease income		(2,741)	(8,327)
Total lease cost	[1]	$ 25,624	$ 69,757
[1]	Short-term lease cost for the three and nine months ended October 31, 2019 was not material and is not included in the table above.

Leases - Schedule of Supplement

Leases - Schedule of Supplemental Cash Flow Information Related to Leases (Details) - USD ($) $ in Thousands		3 Months Ended				9 Months Ended
		Oct. 31, 2019		Oct. 31, 2018	[2]	Oct. 31, 2019		Oct. 31, 2018	[2]
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows for operating leases		$ 11,562				$ 35,053
Operating cash flows for finance leases		802				2,531
Financing cash flows for finance leases		7,055	[1]	$ 4,290		26,200	[1]	$ 17,192
Right-of-use assets obtained in exchange of lease obligations
Operating leases	[3]	1,016				230,371
Finance leases		$ 40,530	[1],[3]	$ 9,230		$ 84,950	[1],[3]	$ 27,751
[1]	As reported and disclosed under ASC Topic 842
[2]	As reported and disclosed under ASC Topic 840
[3]	Includes the adoption impact of ASC Topic 842 on the opening balance sheet as of February 1, 2019 as disclosed in Note 1.

Leases - Summary of Information

Leases - Summary of Information Related to Remaining Lease Term and Discount Rate (Details)	Oct. 31, 2019
Leases [Abstract]
Weighted average remaining lease term, Operating leases (in years)	6 years 10 months 2 days
Weighted average remaining lease term, Finance leases (in years)	3 years 25 days
Weighted average discount rate, Operating leases	5.41%
Weighted average discount rate, Finance leases	4.29%

Leases - Summary of Maturities

Leases - Summary of Maturities of Operating and Finance Lease Liabilities (Details) $ in Thousands	Oct. 31, 2019USD ($)
Leases [Abstract]
Operating Leases, Remainder of 2020	$ 14,577	[1]
Operating Leases, 2021	51,175	[1]
Operating Leases, 2022	48,918	[1]
Operating Leases, 2023	39,241	[1]
Operating Leases, 2024	37,230	[1]
Operating Leases, Thereafter	115,241	[1]
Operating Leases, Total lease payments	306,382	[1]
Less: Operating Leases imputed interest	(52,678)	[1]
Operating Leases, Present value of total lease liabilities	253,704	[1]
Finance Leases, Remainder of 2020	17,559
Finance Leases, 2021	48,240
Finance Leases, 2022	38,084
Finance Leases, 2023	29,160
Finance Leases, 2024	8,742
Finance Leases, Total lease payments	141,785
Less: Finance Leases imputed interest	(9,842)
Finance Leases, Present value of total lease liabilities	$ 131,943
[1]	Non-cancellable sublease proceeds for the remainder of the fiscal year ending January 31, 2020 and the fiscal years ending January 31, 2021, 2022, and 2023 of $1.4 million, $9.5 million, $7.1 million, and $6.1 million, respectively, are not included in the table above.

Leases - Summary of Maturitie_2

Leases - Summary of Maturities of Operating and Finance Lease Liabilities (Parenthetical) (Details) $ in Millions	Oct. 31, 2019USD ($)
Leases [Abstract]
Non-cancellable sublease proceeds for the year ending January 31, 2020	$ 1.4
Non-cancellable sublease proceeds for the year ending January 31, 2021	9.5
Non-cancellable sublease proceeds for the year ending January 31, 2022	7.1
Non-cancellable sublease proceeds for the year ending January 31, 2023	$ 6.1

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 31, 2019	Jan. 31, 2019
Minimum
Commitments And Contingencies [Line Items]
Purchase obligation, term	3 years
Maximum
Commitments And Contingencies [Line Items]
Purchase obligation, term	8 years
November 2017 Facility | Wells Fargo Bank | Secured Debt | Letters of Credit
Commitments And Contingencies [Line Items]
Letters of credit facility	$ 26.5	$ 26.5

Commitments and Contingencies_2

Commitments and Contingencies - Future Payments under Non-cancellable Contractual Purchases (Details) $ in Thousands	Oct. 31, 2019USD ($)
Purchase Obligation Fiscal Year Maturity [Abstract]
2020	$ 8,786
2021	12,003
2022	2,309
2023	34,011
Thereafter	165,800
Purchase Obligation	$ 222,909

Debt - Additional Information (

Debt - Additional Information (Details) - USD ($) $ in Millions	Nov. 27, 2017	Oct. 31, 2019	Oct. 31, 2019
Interest Rate Swap
Debt Instrument [Line Items]
Derivative, effective date			Sep. 5, 2019
Derivative, maturity period			5 years
November 2017 Facility | Secured Debt | Wells Fargo Bank
Debt Instrument [Line Items]
Line of credit facility maturity date	Nov. 27, 2020	Jul. 12, 2022
Line of credit facility, finance leases and debt covenant limit	$ 100	$ 200	$ 200
Line of credit facility, current borrowing capacity		40	40
November 2017 Facility | Revolving Credit Facility | Secured Debt | Wells Fargo Bank
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	85	100	$ 100
Line of credit facility, interest payment terms			Interest on the revolving loans is payable quarterly in arrears with respect to loans based on the prime rate and at the end of an interest period in the case of loans based on the LIBOR rate (or at each three-month interval if the interest period is longer than three months).
November 2017 Facility | Revolving Credit Facility | Secured Debt | Wells Fargo Bank | Prime Rate
Debt Instrument [Line Items]
Line of credit facility, floating interest rate			0.25%
November 2017 Facility | Revolving Credit Facility | Secured Debt | Wells Fargo Bank | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Line of credit facility, floating interest rate			1.00%
November 2017 Facility | Letters of Credit | Secured Debt | Wells Fargo Bank
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity sublimit	$ 30	$ 45	$ 45

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018	Apr. 30, 2019	Jan. 31, 2019	Jan. 31, 2015
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Aggregate intrinsic value of exercised options			$ 4,500	$ 27,500
Aggregate estimated fair value of stock options granted to employees vested			$ 2,400	$ 5,600
Weighted-average grant date fair value of options granted to employees			$ 8	$ 8.24
Unrecognized stock-based compensation expense related to stock option	$ 6,800		$ 6,800
Remaining weighted-average period			2 years 5 months 8 days
Stock options outstanding	9,195,826		9,195,826			9,096,961
Unrecognized stock-based compensation expense	$ 3,300		$ 3,300		$ 7,200
Share-based compensation expense	37,758	$ 31,790	$ 106,925	$ 89,086
Common Stock, trading day			On June 14, 2018, all of our outstanding shares of Class B common stock automatically converted into the same number of shares of Class A common stock pursuant to the terms of our Amended and Restated Certificate of Incorporation. No additional shares of Class B common stock will be issued following such conversion. The conversion occurred pursuant to Article IV of the Amended and Restated Certificate of Incorporation, which provided that each one share of Class B common stock would convert automatically, without any further action, into one share of Class A common stock on the first trading day falling on or after the date on which the outstanding shares of Class B common stock represent less than 5% of the aggregate number of shares of the then outstanding Class A common stock and Class B common stock.
Employee Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Dividend yield		0.00%	0.00%	0.00%
Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Remaining weighted-average period			2 years 10 months 2 days
Unrecognized stock-based compensation expense	304,600		$ 304,600
Performance-Based Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized stock-based compensation expense related to stock option	$ 4,000		$ 4,000
Remaining weighted-average period			3 years 3 days
2015 Equity Incentive Plan | Performance-Based Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock options outstanding	1,375,000		1,375,000
2015 Equity Incentive Plan | Time-Based Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period			4 years
2015 Equity Incentive Plan | Class A Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares common stock reserved for issuance	19,337,104		19,337,104				12,200,000
2015 Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of eligible compensation allowed to employees to purchase shares at a discount	15.00%		15.00%
Description of offering period excluding initial offering period			The 2015 ESPP provides for 24-month offering periods beginning March 16 and September 16 of each year, and each offering period consists of four six-month purchase periods.
Purchase price of common stock, percentage			85.00%
Description of offering period resets			the offering period resets and the new lower price becomes the new offering price for a new 24 month offering period.
Unrecognized stock-based compensation expense	$ 21,100		$ 21,100
Dividend yield	0.00%	0.00%	0.00%	0.00%
2015 Employee Stock Purchase Plan | Class A Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares common stock reserved for issuance	1,926,616		1,926,616				2,500,000
Fiscal 2020 Executive Bonus Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Description of offering period resets			certain offering periods reset and the new lower price became the new offering price for a new 24 month offering period
Unrecognized stock-based compensation expense	$ 1,800		$ 1,800
Equity incentive compensation description			The Fiscal 2020 Executive Bonus Plan provides opportunities for 100% equity incentive compensation payouts based on our actual achievement of pre-established corporate financial objectives, subject to review and a final approval by our Compensation Committee.
Share-based compensation expense			$ 2,700
Fiscal 2020 Executive Bonus Plan | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Remaining weighted-average period			1 year
Fiscal 2020 Executive Bonus Plan | Class A Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common Stock, trading day			The number of restricted stock units each participant will receive is equal to the dollar value of his or her actual award payment divided by the average closing price of a share of our Class A common stock for the 30-trading day period ending the last trading date before the grant date
One Year from Vesting Commencement Date | 2015 Equity Incentive Plan | Employee Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting percentage			25.00%
One Year from Vesting Commencement Date | 2015 Equity Incentive Plan | Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting percentage			25.00%
One Year from Vesting Commencement Date | 2015 Equity Incentive Plan | Time-Based Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting percentage			25.00%
Per Month after One Year of Vesting Commencement Date | 2015 Equity Incentive Plan | Employee Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting percentage			2.08%
Per Month after One Year of Vesting Commencement Date | 2015 Equity Incentive Plan | Time-Based Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting percentage			2.08%
Per Quarter after One Year Of Vesting Commencement Date | 2015 Equity Incentive Plan | Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting percentage			6.25%

Stock-Based Compensation - Summ

Stock-Based Compensation - Summary of Stock Option Activity Under Equity Incentive Plans and Related Information (Details) $ / shares in Units, $ in Thousands	9 Months Ended	12 Months Ended
	Oct. 31, 2019USD ($)$ / sharesshares	Jan. 31, 2019USD ($)$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Shares Subject to Options Outstanding, Beginning balance | shares	9,096,961
Shares Subject to Options Outstanding, Options granted | shares	577,082
Shares Subject to Options Outstanding, Options exercised | shares	(417,245)
Shares Subject to Options Outstanding, Options forfeited/cancelled | shares	(60,972)
Shares Subject to Options Outstanding, Ending balance | shares	9,195,826	9,096,961
Shares Subject to Options Outstanding, Vested and expected to vest | shares	9,119,519
Shares Subject to Options Outstanding, Exercisable | shares	7,579,160
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted-Average Exercise Price, Beginning Balance | $ / shares	$ 9.01
Weighted-Average Exercise Price, Options granted | $ / shares	19.89
Weighted-Average Exercise Price, Options exercised | $ / shares	7.21
Weighted-Average Exercise Price, Options forfeited/cancelled | $ / shares	18
Weighted-Average Exercise Price, Ending Balance | $ / shares	9.71	$ 9.01
Weighted-Average Exercise Price, Vested and expected to vest | $ / shares	9.63
Weighted-Average Exercise Price, Exercisable | $ / shares	$ 7.60
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Weighted-Average Remaining Contractual Life (Years)	4 years 6 months 18 days	4 years 11 months 19 days
Weighted-Average Remaining Contractual Life (Years), Vested and expected to vest	4 years 6 months 3 days
Weighted-Average Remaining Contractual Life (Years), Exercisable	3 years 8 months 4 days
Aggregate Intrinsic Value, Balance | $	$ 72,392	$ 108,731
Aggregate Intrinsic Value, Vested and expected to vest | $	72,389
Aggregate Intrinsic Value, Exercisable | $	$ 72,342

Stock-Based Compensation - Su_2

Stock-Based Compensation - Summary of Restricted Stock Unit Activity Under Equity Incentive Plans and Related Information (Details) - Restricted Stock Units	9 Months Ended
	Oct. 31, 2019$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Number of Restricted Stock Units Outstanding, Unvested Beginning Balance | shares	18,098,707
Number of Restricted Stock Units, Granted | shares	11,032,086
Number of Restricted Stock Units, Vested, net of shares withheld for employee payroll taxes | shares	(3,275,859)
Number of Restricted Stock Units, Forfeited/cancelled | shares	(3,320,045)
Number of Restricted Stock Units, Unvested Ending Balance | shares	22,534,889
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Weighted-Average Grant Date Fair Value, Unvested Beginning Balance | $ / shares	$ 19.35
Weighted-Average Grant Date Fair Value, Granted | $ / shares	19.02
Weighted-Average Grant Date Fair Value, Vested | $ / shares	20
Weighted-Average Grant Date Fair Value, Forfeited/cancelled | $ / shares	19.68
Weighted-Average Grant Date Fair Value, Unvested Ending Balance | $ / shares	$ 19.04

Stock-Based Compensation - Su_3

Stock-Based Compensation - Summary of Components of Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 37,758	$ 31,790	$ 106,925	$ 89,086
Cost of Revenue
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	4,428	3,598	12,399	10,280
Research and Development
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	16,653	12,043	44,878	33,668
Sales and Marketing
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	9,250	9,708	28,644	27,701
General and Administrative
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 7,427	$ 6,441	$ 21,004	$ 17,437

Stock-Based Compensation - Su_4

Stock-Based Compensation - Summary of Estimated Fair Value of Employee Stock Options and 2015 ESPP (Details)	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018
2015 Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk-free interest rate, Minimum	1.70%	2.30%	1.70%	2.00%
Risk-free interest rate, Maximum	1.90%	2.80%	2.50%	2.80%
Volatility, Minimum	34.00%	40.00%	34.00%	37.00%
Volatility, Maximum	47.00%	48.00%	55.00%	50.00%
Dividend yield	0.00%	0.00%	0.00%	0.00%
2015 Employee Stock Purchase Plan | Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected term (in years)	6 months	6 months	6 months	6 months
2015 Employee Stock Purchase Plan | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected term (in years)	2 years	2 years	2 years	2 years
Employee Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected term (in years)		5 years 9 months 18 days
Risk-free interest rate		3.10%	1.80%
Risk-free interest rate, Minimum				2.80%
Risk-free interest rate, Maximum				3.10%
Volatility		45.00%	45.00%	45.00%
Dividend yield		0.00%	0.00%	0.00%
Employee Stock Option | Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected term (in years)			5 years 6 months	5 years 6 months
Employee Stock Option | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected term (in years)			5 years 9 months 18 days	5 years 9 months 18 days

Net Loss per Share - Additional

Net Loss per Share - Additional Information (Details) - shares	Jun. 15, 2018	Oct. 31, 2019	Jan. 31, 2019	Jun. 14, 2018
Class Of Stock [Line Items]
Common Stock, conversion features		On June 14, 2018, all of our outstanding shares of Class B common stock automatically converted into the same number of shares of Class A common stock pursuant to the terms of our Amended and Restated Certificate of Incorporation. No additional shares of Class B common stock will be issued following such conversion. The conversion occurred pursuant to Article IV of the Amended and Restated Certificate of Incorporation, which provided that each one share of Class B common stock would convert automatically, without any further action, into one share of Class A common stock on the first trading day falling on or after the date on which the outstanding shares of Class B common stock represent less than 5% of the aggregate number of shares of the then outstanding Class A common stock and Class B common stock.
Additional common shares issued		149,478,000	144,311,000
Class B Common Stock
Class Of Stock [Line Items]
Maximum percentage of outstanding shares of Class A and Class B common stock, for automatic conversion of shares of Class B common stock				5.00%
Additional common shares issued				0
Reduction in number of authorized shares of common stock	200,000,000

Net Loss per Share - Summary of

Net Loss per Share - Summary of Computation of Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								9 Months Ended
	Oct. 31, 2019		Jul. 31, 2019	Apr. 30, 2019	Oct. 31, 2018		Jul. 31, 2018	Apr. 30, 2018	Oct. 31, 2019		Oct. 31, 2018
Numerator:
Net loss	$ (40,896)	[1]	$ (36,234)	$ (36,828)	$ (40,196)	[2]	$ (38,085)	$ (36,637)	$ (113,958)	[1]	$ (114,918)	[2]
Denominator:
Weighted-average number of shares outstanding—basic and diluted	148,555	[1]			142,366	[2]			146,997	[1]	140,559	[2]
Net loss per share—basic and diluted	$ (0.28)	[1]			$ (0.28)	[2]			$ (0.78)	[1]	$ (0.82)	[2]
Class A Common Stock
Numerator:
Net loss	$ (40,896)				$ (40,196)				$ (113,958)		$ (110,868)
Denominator:
Weighted-average number of shares outstanding—basic and diluted	148,555				142,366				146,997		135,605
Net loss per share—basic and diluted	$ (0.28)				$ (0.28)				$ (0.78)		$ (0.82)
Class B Common Stock
Numerator:
Net loss											$ (4,050)
Denominator:
Weighted-average number of shares outstanding—basic and diluted											4,954
Net loss per share—basic and diluted											$ (0.82)
[1]	As reported and disclosed under ASC Topic 842
[2]	As reported and disclosed under ASC Topic 840

Net Loss per Share - Summary _2

Net Loss per Share - Summary of Weighted Average Outstanding Shares Excluded from Computation of Diluted Net Loss per Share (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	24,921	25,958	25,430	25,631
Options to purchase common stock
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	5,880	9,488	7,709	10,026
Restricted Stock Units
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	17,006	14,791	16,477	14,474
Employee stock purchase plan
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	2,035	1,679	1,244	1,131

Segments - Additional Informati

Segments - Additional Information (Details)	9 Months Ended
	Oct. 31, 2019Segment
Segment Reporting [Abstract]
Number of operating segments	1