PagerDuty (PD) 10-Q 3 Sep 20 2021 Q2 Quarterly report Financial data

Cover Page

Cover Page - shares	6 Months Ended
	Jul. 31, 2020	Sep. 01, 2020
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jul. 31, 2020
Document Transition Report	false
Entity File Number	001-38856
Entity Registrant Name	PAGERDUTY, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	27-2793871
Entity Address, Address Line One	600 Townsend St.
Entity Address, Address Line Two	Suite 200
Entity Address, City or Town	San Francisco
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94103
City Area Code	844
Local Phone Number	800-3889
Title of 12(b) Security	Common Stock, $0.000005 par value
Trading Symbol	PD
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		79,433,673
Entity Central Index Key	0001568100
Current Fiscal Year End Date	--01-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q2
Amendment Flag	false

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jul. 31, 2020	Jan. 31, 2020
Current assets:
Cash and cash equivalents	$ 376,638	$ 124,024
Accounts receivable, net of allowance for doubtful accounts of $1,712 and $810 as of July 31, 2020 and January 31, 2020, respectively	37,429	37,128
Investments	224,932	227,375
Deferred contract costs, current	10,326	9,301
Prepaid expenses and other current assets	11,950	7,163
Total current assets	661,275	404,991
Property and equipment, net	12,805	12,369
Deferred contract costs, non-current	16,497	16,387
Lease right-of-use assets	26,885
Other assets	1,725	1,651
Total assets	719,187	435,398
Current liabilities:
Accounts payable	4,775	6,434
Accrued expenses and other current liabilities	7,713	7,197
Accrued compensation	15,198	13,911
Deferred revenue, current	97,007	87,490
Lease liabilities, current	5,078
Total current liabilities	129,771	115,032
Convertible senior notes, net	210,976	0
Deferred revenue, non-current	4,173	5,079
Lease liabilities, non-current	29,064
Other liabilities	3,332	7,349
Total liabilities	377,316	127,460
Commitments and contingencies (Note 9)
Stockholders’ equity:
Common stock	0	0
Additional paid-in capital	546,169	487,008
Accumulated other comprehensive income	1,056	137
Accumulated deficit	(205,354)	(179,207)
Total stockholders’ equity	341,871	307,938
Total liabilities and stockholders’ equity	$ 719,187	$ 435,398

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jul. 31, 2020	Jan. 31, 2020
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 1,712	$ 810

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Income Statement And Statement Of Comprehensive Income [Abstract]
Revenue	$ 50,714	$ 40,361	$ 100,500	$ 77,675
Cost of revenue	6,637	6,106	13,600	11,592
Gross profit	44,077	34,255	86,900	66,083
Operating expenses:
Research and development	15,535	11,635	30,549	22,541
Sales and marketing	27,511	23,786	54,247	44,953
General and administrative	14,480	13,215	28,153	25,699
Total operating expenses	57,526	48,636	112,949	93,193
Loss from operations	(13,449)	(14,381)	(26,049)	(27,110)
Interest income	1,048	1,967	2,401	2,856
Interest expense	(1,608)	0	(1,608)	0
Other (expense) income, net	(431)	80	(412)	101
Loss before provision for income taxes	(14,440)	(12,334)	(25,668)	(24,153)
Provision for income taxes	(248)	(236)	(479)	(481)
Net loss	(14,688)	(12,570)	(26,147)	(24,634)
Other comprehensive income:
Unrealized gain on investments	277	0	919	0
Total comprehensive loss	$ (14,411)	$ (12,570)	$ (25,228)	$ (24,634)
Net loss per share, basic and diluted (in dollars per share)	$ (0.19)	$ (0.17)	$ (0.33)	$ (0.45)
Weighted average shares used in calculating net loss per share, basic and diluted (in shares)	78,775	75,433	78,278	54,327

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income	Accumulated Deficit
Redeemable convertible preferred stock, beginning balance (in shares) at Jan. 31, 2019	41,273,345
Redeemable convertible preferred stock, beginning balance at Jan. 31, 2019	$ 173,023
Increase (Decrease) in Temporary Equity [Roll Forward]
Conversion of convertible preferred stock to common stock in connection with initial public offering (in shares)	(41,273,345)
Conversion of convertible preferred stock to common stock in connection with initial public offering	$ (173,023)
Redeemable convertible preferred stock, ending balance (in shares) at Jul. 31, 2019	0
Redeemable convertible preferred stock, ending balance at Jul. 31, 2019	$ 0
Beginning balance (in shares) at Jan. 31, 2019		23,189,921
Beginning balance at Jan. 31, 2019	(68,930)	$ 0	$ 59,938		$ (128,868)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options and restricted stock agreements, net of repurchases (in shares)		1,165,345
Issuance of common stock upon exercise of stock options and restricted stock agreements, net of repurchases	2,785		2,785
Vesting of restricted stock units, net of employee payroll taxes (in shares)		183
Vesting of restricted stock units, net of employee payroll taxes	(10)		(10)
Exercise of common stock warrants (in shares)		737,807
Repayment of promissory note	515		515
Issuance of common stock in connection with initial public offering, net of underwriting discounts and issuance costs (in shares)		9,860,500
Issuance of common stock in connection with initial public offering, net of underwriting discounts and issuance costs	213,697		213,697
Conversion of convertible preferred stock to common stock in connection with initial public offering (in shares)		41,273,345
Conversion of convertible preferred stock to common stock in connection with initial public offering	173,023		173,023
Vesting of early exercised options	672		672
Stock-based compensation	12,045		12,045
Net loss	(24,634)				(24,634)
Ending balance (in shares) at Jul. 31, 2019		76,227,101
Ending balance at Jul. 31, 2019	$ 309,163	$ 0	462,665		(153,502)
Redeemable convertible preferred stock, ending balance (in shares) at Jul. 31, 2019	0
Redeemable convertible preferred stock, ending balance at Jul. 31, 2019	$ 0
Beginning balance (in shares) at Apr. 30, 2019		76,013,403
Beginning balance at Apr. 30, 2019	313,627	$ 0	454,559		(140,932)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options and restricted stock agreements, net of repurchases (in shares)		213,515
Issuance of common stock upon exercise of stock options and restricted stock agreements, net of repurchases	545		545
Vesting of restricted stock units, net of employee payroll taxes (in shares)		183
Vesting of restricted stock units, net of employee payroll taxes	(10)		(10)
Vesting of early exercised options	338		338
Stock-based compensation	7,233		7,233
Net loss	(12,570)				(12,570)
Ending balance (in shares) at Jul. 31, 2019		76,227,101
Ending balance at Jul. 31, 2019	309,163	$ 0	462,665		(153,502)
Beginning balance (in shares) at Jan. 31, 2020		77,793,540
Beginning balance at Jan. 31, 2020	307,938	$ 0	487,008	$ 137	(179,207)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options and restricted stock agreements, net of repurchases (in shares)		1,286,892
Issuance of common stock upon exercise of stock options and restricted stock agreements, net of repurchases	5,771		5,771
Vesting of restricted stock units, net of employee payroll taxes (in shares)		93,942
Vesting of restricted stock units, net of employee payroll taxes	(1,743)		(1,743)
Vesting of early exercised options	507		507
Equity component of convertible senior notes, net of issuance costs	68,478		68,478
Purchases of capped calls related to convertible senior notes	(35,708)		(35,708)
Issuance of common stock in connection with employee stock purchase plan (in shares)		181,253
Issuance of common stock in connection with employee stock purchase plan	3,558		3,558
Other comprehensive income	919			919
Stock-based compensation	18,298		18,298
Net loss	(26,147)				(26,147)
Ending balance (in shares) at Jul. 31, 2020		79,355,627
Ending balance at Jul. 31, 2020	341,871	$ 0	546,169	1,056	(205,354)
Beginning balance (in shares) at Apr. 30, 2020		78,526,004
Beginning balance at Apr. 30, 2020	307,543	$ 0	497,430	779	(190,666)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options and restricted stock agreements, net of repurchases (in shares)		557,467
Issuance of common stock upon exercise of stock options and restricted stock agreements, net of repurchases	3,927		3,927
Vesting of restricted stock units, net of employee payroll taxes (in shares)		90,903
Vesting of restricted stock units, net of employee payroll taxes	(1,697)		(1,697)
Vesting of early exercised options	191		191
Equity component of convertible senior notes, net of issuance costs	68,478		68,478
Purchases of capped calls related to convertible senior notes	(35,708)		(35,708)
Issuance of common stock in connection with employee stock purchase plan (in shares)		181,253
Issuance of common stock in connection with employee stock purchase plan	3,558		3,558
Other comprehensive income	277			277
Stock-based compensation	9,990		9,990
Net loss	(14,688)				(14,688)
Ending balance (in shares) at Jul. 31, 2020		79,355,627
Ending balance at Jul. 31, 2020	$ 341,871	$ 0	$ 546,169	$ 1,056	$ (205,354)

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jul. 31, 2020	Jul. 31, 2019
Cash flows from operating activities
Net loss	$ (26,147)	$ (24,634)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	2,039	1,046
Amortization of deferred contract costs	5,064	3,442
Amortization of debt discount and issuance costs	1,258	0
Stock-based compensation	18,276	12,045
Non-cash lease expense	2,204
Other	1,426	83
Changes in operating assets and liabilities:
Accounts receivable	(1,293)	(2,733)
Deferred contract costs	(6,199)	(6,690)
Prepaid expenses and other assets	(4,989)	(3,411)
Accounts payable	(1,549)	(2,712)
Accrued expenses and other liabilities	3,618	2,433
Accrued compensation	1,287	2,031
Deferred revenue	8,611	13,693
Lease liabilities	(1,744)
Net cash provided by (used in) operating activities	1,862	(5,407)
Cash flows from investing activities
Purchases of property and equipment	(3,292)	(2,019)
Capitalization of internal-use software costs	(111)	0
Proceeds from maturities of held-to-maturity investments	24,040	0
Purchases of held-to-maturity investments	0	(34,696)
Purchases of available-for-sale investments	(100,029)	0
Proceeds from maturities of available-for-sale investments	71,632	0
Proceeds from sales of available-for-sale investments	7,285	0
Net cash used in investing activities	(475)	(36,715)
Cash flows from financing activities
Proceeds from issuance of convertible senior notes, net of issuance costs paid of $8,151	279,349	0
Purchases of capped calls related to convertible senior notes	(35,708)	0
Proceeds from initial public offering, net of underwriters' discounts and commissions	0	220,086
Payments of costs related to initial public offering	0	(5,208)
Proceeds from employee stock purchase plan	3,558	0
Proceeds from repayment of promissory note	0	515
Proceeds from issuance of common stock upon exercise of stock options	5,771	2,785
Employee payroll taxes paid related to net share settlement of restricted stock units	(1,743)	(10)
Net cash provided by financing activities	251,227	218,168
Net increase in cash, cash equivalents, and restricted cash	252,614	176,046
Cash, cash equivalents, and restricted cash at beginning of period	124,024	130,323
Cash, cash equivalents, and restricted cash at end of period	376,638	306,369
Supplemental cash flow data:
Cash paid for income taxes	0	56
Non-cash investing and financing activities:
Vesting of early exercised options	507	672
Purchase of property and equipment, accrued but not yet paid	385	1,032
Costs related to issuance of convertible senior notes, accrued but not yet paid	1,154	0
Costs related to initial public offering, accrued but not yet paid	0	737
Non-cash purchases of property and equipment	0	2,364
Reconciliation of cash, cash equivalents, and restricted cash to the condensed consolidated balance sheets
Total cash, cash equivalents, and restricted cash	$ 376,638	$ 306,369

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flows (Parenthetical) $ in Thousands	6 Months Ended
	Jul. 31, 2020USD ($)
Statement of Cash Flows [Abstract]
Issuance of convertible senior notes, issuance costs paid	$ 8,151

Description of Business and Bas

Description of Business and Basis of Presentation	6 Months Ended
	Jul. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business and Basis of Presentation	Description of Business and Basis of Presentation Description of Business PagerDuty, Inc. was incorporated under the laws of the state of Delaware in May 2010. PagerDuty acts as the central nervous system for the digital enterprise. PagerDuty harnesses digital signals from virtually any software-enabled system or device, combines it with human response data and orchestrates teams to take the right actions in real time. The Company’s products help organizations improve operations, accelerate innovation, increase revenue, mitigate security risk, and deliver a great customer experience. As used herein, “PagerDuty”, “we”, “our”, “the Company” and similar terms include PagerDuty, Inc., unless the context indicates otherwise. Initial Public Offering On April 15, 2019, the Company completed its initial public offering (“IPO”), pursuant to which the Company issued and sold 9,860,500 shares of common stock, inclusive of the over-allotment option, at a public offering price of $24.00 per share. The Company received net proceeds of $213.7 million, after deducting underwriters' discounts and commissions of $16.6 million and other issuance costs of $6.4 million. Immediately prior to the closing of the Company’s IPO, all shares of the redeemable convertible preferred stock automatically converted into 41,273,345 shares of common stock. Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”), and applicable rules and regulations of the Securities and Exchange Commission (“SEC”) regarding interim financial reporting. The condensed consolidated balance sheet as of January 31, 2020 was derived from the audited consolidated financial statements as of that date but does not include all of the information and notes required by GAAP for complete financial statements. Certain information and note disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. Therefore, these condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and the related notes thereto as of and for the year ended January 31, 2020, included in the Company’s Annual Report on Form 10-K, filed with the SEC. The condensed consolidated financial statements include the results of PagerDuty, Inc. and its wholly owned subsidiaries. All intercompany balances and transactions have been eliminated upon consolidation. In the opinion of management, the information contained herein reflects all adjustments necessary for a fair presentation of the Company’s results of operations, financial position, cash flows, and statements of stockholders’ equity. The results of operations for the three and six months ended July 31, 2020 are not necessarily indicative of the results to be expected for the full year ending January 31, 2021 or for any other interim period, or for any future year. The Company’s fiscal year ends on January 31. References to fiscal 2021, for example, refer to the fiscal year ended January 31, 2021. Convertible Senior Notes In June 2020, The Company issued $287.5 million aggregate principal amount of 1.25% Convertible Senior Notes due 2025 (the “Notes”). See Note 8 for additional details. Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make, on an ongoing basis, estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the consolidated financial statements, and the reported amounts of revenue and expenses during the reporting periods. Actual results could differ from these estimates. The Company’s most significant estimates and judgments involve the valuation of the Company’s stock-based awards, including the determination of fair value of common stock (prior to the closing of the IPO) and the fair value of the employee stock purchase plan (“ESPP”) expense, period of benefit for amortizing deferred contract costs, the determination of the allowance for doubtful accounts, the provision for income taxes, including the related valuation allowance and any uncertain tax positions, fair value of the liability and equity components of the Notes, and the incremental borrowing rate for lease liabilities, among others. Management bases its estimates on historical experience and on various other assumptions which management believes to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities. In December 2019, the novel coronavirus and resulting disease (“COVID-19”) was reported and in March 2020 the World Health Organization declared it a pandemic. The extent of the impact of COVID-19 on our operational and financial performance will depend on certain developments, including the duration and spread of the outbreak, impact on our customers and our sales cycles, and impact on our employees, as discussed in more detail in the Overview section of our Management’s Discussion and Analysis. During the quarter, this uncertainty resulted in a higher level of judgment related to our estimates and assumptions related to the estimate of credit losses for accounts receivable. As of the date of issuance of the financial statements, we are not aware of any specific event or circumstance that would require us to update our estimates, judgments, or revise the carrying value of our assets or liabilities. These estimates may change as new events occur and additional information is obtained and are recognized in the condensed consolidated financial statements as soon as they become known. Actual results could differ from those estimates and any such differences may be material to our financial statements.

Summary of Significant Accounti

Summary of Significant Accounting Policies	6 Months Ended
	Jul. 31, 2020
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Concentrations of Risk and Significant Customers The Company’s financial instruments that are exposed to concentrations of credit risk consist primarily of cash and cash equivalents, held-to-maturity investments, available-for-sale investments, and accounts receivable. All of the Company’s cash and cash equivalents and investments are invested in money market funds, United States (“U.S.”) Treasury securities, commercial paper, corporate debt securities, or U.S. Government agency securities that management believes to be of high credit quality. No single customer accounted for 10% of the total accounts receivable balance as of July 31, 2020 or January 31, 2020. No single customer represented 10% or more of revenue for the three and six months ended July 31, 2020 or 2019. Segment Information The Company manages operations and allocates resources as one operating segment. The Company’s chief operating decision maker (“CODM”) is its chief executive officer, who reviews financial information presented on a consolidated basis for purposes of making operating decisions, assessing financial performance, and allocating resources. See Note 14, “Geographic Information” for information regarding the Company's long-lived assets and revenue by geography. Significant Accounting Policies There have been no significant changes to our significant accounting policies as compared to those described in our Annual Report on Form 10-K for the fiscal year ended January 31, 2020, other than as set forth below. Convertible Senior Notes The Notes are accounted for in accordance with Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Subtopic 470-20, Debt with Conversion and Other Options . Pursuant to ASC Subtopic 470-20, issuers of certain convertible debt instruments, such as the Notes, that have a net settlement feature and may be settled wholly or partially in cash upon conversion are required to separately account for the liability (debt) and equity (conversion option) components of the instrument. The carrying amount of the liability component of the instrument is computed by estimating the fair value of a similar liability without the conversion option using a market-based approach. The amount of the equity component is then calculated by deducting the fair value of the liability component from the principal amount of the instrument. The difference between the principal amount and the liability component represents a debt discount that is amortized to interest expense over the respective term of the Notes using the effective interest rate method. The equity component is not remeasured as long as it continues to meet the conditions for equity classification. In accounting for the issuance costs related to the Notes, the allocation of issuance costs incurred between the liability and equity components was based on their relative values. Accounts Receivable and Allowance for Doubtful Accounts Accounts receivable are recorded at the invoiced amount, net of allowance for doubtful accounts. The allowance is based upon historical loss patterns, the age of each past due invoice, and an evaluation of the potential risk of loss associated with delinquent accounts. The allowance also reflects current market conditions and reasonable and supportable forecasts of future economic conditions. As of July 31, 2020, our allowance reflects considerations related to the COVID-19 pandemic and may increase in future periods as we ascertain future impacts to our customers and business. The allowance for doubtful accounts was $1.7 million and $0.8 million as of July 31, 2020 and January 31, 2020. Recently Adopted Accounting Pronouncements In February 2016, the FASB issued Accounting Standards Update No. 2016-02 Leases, (“Topic 842”) (“ASU 2016-02”), which would require lessees to recognize most leases on their balance sheets, whether operating or financing, while continuing to recognize the expenses on their income statements in a manner similar to current practice. The guidance states that a lessee would recognize a lease liability for the obligation to make lease payments and a right-to-use asset for the right to use the underlying asset for the lease term. The Company adopted the standard using the optional alternative method on a prospective basis with an effective date as of the beginning of the Company’s fiscal year, February 1, 2020, and applied it to the operating leases that existed on that date. Prior year comparative financial information was not recast under the new standard and continues to be presented under ASC 840. The Company elected to utilize the package of practical expedients available for expired or existing contracts which allowed the Company to carryforward historical assessments of (a) whether contracts are or contain leases, (b) lease classification, and (c) initial direct costs. The Company elected to apply the short-term lease exception for all leases. Under the short-term lease exception, the Company will not recognize right-of-use assets or lease liabilities for leases that, at the acquisition date, have a remaining lease term of 12 months or less. As a result of implementing this guidance, the Company recognized a net operating right-of-use asset of $29.1 million and a $35.9 million operating lease liability in its condensed consolidated balance sheets as of February 1, 2020. The adoption of this guidance did not affect our condensed consolidated statements of operations or our condensed consolidated statements of cash flows. See Note 7, “Leases” for further information. In June 2016, the FASB issued Accounting Standards Update No. 2016-13, Financial Instruments—Credit Losses (“Topic 326”) Measurement of Credit Losses on Financial Instruments (“ASU 2016-13”), which requires an entity to utilize a new impairment model known as the current expected credit loss (“CECL”) model to estimate its lifetime “expected credit loss” and record an allowance that, when deducted from the amortized cost basis of the financial asset, presents the net amount expected to be collected on the financial asset. The CECL model is expected to result in more timely recognition of credit losses. This guidance also requires new disclosures for financial assets measured at amortized cost, loans, and available-for-sale debt securities. The Company adopted the standard as of the beginning of the Company’s fiscal year, February 1, 2020. The adoption of this guidance did not have a material impact to the condensed consolidated financial statements. In August 2018, the FASB issued Accounting Standards Update No. 2018-13, Fair Value Measurement (“Topic 820”) (“ASU 2018-13”), which modifies the disclosure requirements for fair value measurements for certain types of investments. We adopted this standard in the first quarter of fiscal year 2020. The adoption did not have an effect on our consolidated financial statements. In December 2019, the FASB issued Accounting Standards Update No. 2019-12, Income Taxes (“Topic 740”): Simplifying the Accounting for Income Taxes (“ASU 2019-12”), which is intends to simplify various aspects related to accounting for income taxes. ASU 2019-12 removes certain exceptions to the general principles in Topic 740 and also clarifies and amends existing guidance to improve consistent application. ASU 2019-12 is effective for the Company beginning in fiscal 2022, although early adoption is permitted. The Company early adopted the standard as of the beginning of the Company’s fiscal year, February 1, 2020. The adoption of this guidance did not have a material impact to the condensed consolidated financial statements. Recently Issued Accounting Pronouncements In August 2020, the FASB issued Accounting Standard Update No. 2020-06, Debt—Debt with Conversion Options (“Subtopic 470-20”) and Derivatives and Hedging—Contracts in Entity’s Own Equity (“Subtopic 815-40”) (“ASU 2020-06”), which simplifies the accounting for certain financial instruments with characteristics of liabilities and equity, including convertible instruments and contracts on an entity's own equity. ASU 2020-06 also improves and amends the related Earnings Per Share guidance for both Subtopics. The ASU is part of the FASB's simplification initiative, which aims to reduce unnecessary complexity in U.S. GAAP. ASU 2020-06 will be effective for annual reporting periods beginning after December 15, 2021. Early adoption is permitted, but not before annual reporting periods beginning after December 15, 2020. We are currently evaluating the impact of the new guidance on our consolidated financial statements.

Cash, Cash Equivalents, and Inv

Cash, Cash Equivalents, and Investments	6 Months Ended
	Jul. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Cash, Cash Equivalents, and Investments	Cash, Cash Equivalents, and InvestmentsCash, cash equivalents, and investments consisted of the following: As of July 31, 2020 As of January 31, 2020 (in thousands) Cash and cash equivalents Cash $ 282,342 $ 2,131 Money market funds 91,296 118,899 U.S. Treasury securities 3,000 2,994 Total cash and cash equivalents $ 376,638 $ 124,024 Available-for-sale investments: U.S. Treasury securities $ 37,031 $ 24,987 Commercial paper 22,011 20,132 Corporate debt securities 161,887 149,248 U.S. Government agency securities — 4,973 Total available-for-sale investments $ 220,929 $ 199,340 Held-to-maturity investments: U.S. Treasury securities $ 4,003 $ 9,016 Commercial paper — 5,985 Corporate debt securities — 13,034 Total held-to-maturities investments $ 4,003 $ 28,035 Total investments $ 224,932 $ 227,375 The following tables summarize the Company’s investments’ adjusted cost, net unrealized gains, and fair value by significant investment category as of July 31, 2020 and January 31, 2020. Gross realized gains or losses from sales of available-for-sale securities were not material for the six months ended July 31, 2020. As of July 31, 2020 Cost Basis Unrealized Gain, Net Recorded Basis Available-for-sale investments: U.S. Treasury securities $ 36,966 $ 65 $ 37,031 Commercial paper 22,008 3 22,011 Corporate debt securities 160,899 988 161,887 Total available-for-sale investments $ 219,873 $ 1,056 $ 220,929 Held-to-maturity investments: U.S. Treasury securities $ 4,003 $ — $ 4,003 Total held-to-maturities investments $ 4,003 $ — $ 4,003 Total investments $ 223,876 $ 1,056 $ 224,932 As of January 31, 2020 Cost Basis Unrealized Gain, Net Recorded Basis Available-for-sale investments: U.S. Treasury securities $ 24,978 $ 9 $ 24,987 Commercial paper 20,128 4 20,132 Corporate debt securities 149,124 124 149,248 U.S. Government agency securities 4,973 — 4,973 Total available-for-sale investments $ 199,203 $ 137 $ 199,340 Held-to-maturity investments: U.S. Treasury securities $ 9,016 $ — $ 9,016 Commercial paper 5,985 — 5,985 Corporate debt securities 13,034 — 13,034 Total held-to-maturities investments $ 28,035 $ — $ 28,035 Total investments $ 227,238 $ 137 $ 227,375 All of the Company’s held-to-maturity securities have a contractual maturity of less than one year. The following table presents the Company’s available-for-sale securities by contractual maturity date as of July 31, 2020 and January 31, 2020: As of July 31, 2020 Cost Basis Recorded Basis Due within one year $ 179,103 $ 179,726 Due between one to five years 40,770 41,203 Total $ 219,873 $ 220,929 As of January 31, 2020 Cost Basis Recorded Basis Due within one year $ 128,127 $ 128,169 Due between one to five years 71,076 71,171 Total $ 199,203 $ 199,340 There were no securities in a continuous net loss position for 12 months or longer as of July 31, 2020. When evaluating investments for impairment, we review factors such as length of time and extent to which fair value has been below cost basis, the financial condition of the issuer and any changes thereto, and our intent to sell, or whether it is more likely than not we will be required to sell, the investment before recovery of the investment’s amortized cost. No impairment loss has been recorded on the securities included in the tables above, as we believe that any decrease in fair value of these securities is temporary and we expect to recover at least up to the initial cost of the investment for these securities. We have not recorded an allowance for credit losses, as we believe any such losses would be immaterial based on the high-grade credit rating for each of our marketable securities as of the end of each period.

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jul. 31, 2020
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value MeasurementsThe Company measures its financial assets and liabilities at fair value each reporting period using a fair value hierarchy that prioritizes the use of observable inputs and minimizes 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, as follows: Level 1—Valuations based on observable inputs that reflect quoted prices for identical assets or liabilities in active markets. Level 2—Valuations based on inputs that are directly or indirectly observable in the marketplace. Level 3—Valuations based on unobservable inputs that are supported by little or no market activity. The following table presents information about the Company’s financial assets that are required to be measured or disclosed at fair value using the above input categories: As of July 31, 2020 Level 1 Level 2 Level 3 Total (in thousands) Money market funds $ 91,296 $ — $ — $ 91,296 U.S. Treasury securities 3,000 41,034 — 44,034 Commercial paper — 22,011 — 22,011 Corporate debt securities — 161,887 — 161,887 Total $ 94,296 $ 224,932 $ — $ 319,228 Included in cash equivalents $ 94,296 Included in investments $ 224,932 As of January 31, 2020 Level 1 Level 2 Level 3 Total (in thousands) Money market funds $ 118,899 $ — $ — $ 118,899 U.S. Treasury securities 2,994 34,003 — 36,997 Commercial paper — 26,117 — 26,117 Corporate debt securities — 162,282 — 162,282 U.S. Government agency securities — 4,973 — 4,973 Total $ 121,893 $ 227,375 $ — $ 349,268 Included in cash equivalents $ 121,893 Included in investments $ 227,375 The Company’s assets that are measured by management at fair value on a recurring basis are generally classified within Level 1 or Level 2 of the fair value hierarchy. The Company considers all highly liquid investments purchased with an original maturity of three months or less to be cash equivalents. As of July 31, 2020 and January 31, 2020, the Company’s Level 2 securities were priced by pricing vendors. These pricing vendors utilize observable market information in pricing these securities or, if specific prices are not available for these securities, use other observable inputs like market transactions involving identical or comparable securities. The carrying amounts of certain financial instruments, including cash held in banks, accounts receivable and accounts payable approximate fair value due to their short-term maturities and are excluded from the fair value table above. Convertible Senior Notes As of July 31, 2020, the estimated fair value of the Notes was approximately $301.0 million. The fair value was determined based on the quoted price for the Notes in an inactive market on the last trading day of the reporting period and is considered as Level 2 in the fair value hierarchy.

Property and Equipment, Net

Property and Equipment, Net	6 Months Ended
	Jul. 31, 2020
Property, Plant and Equipment [Abstract]
Property and Equipment, Net	Property and Equipment, Net Property and equipment, net, consisted of the following: As of July 31, 2020 As of January 31, 2020 (in thousands) Leasehold improvements $ 12,445 $ 12,257 Computers and equipment 5,838 4,431 Furniture and fixtures 3,159 2,540 Capitalized internal-use software 522 389 Gross property and equipment (1) 21,964 19,617 Accumulated depreciation and amortization (9,159) (7,248) Property and equipment, net $ 12,805 $ 12,369 (1) Gross property and equipment includes construction-in-progress for leasehold improvements and furniture and fixtures of $0.2 million and $5.1 million that had not yet been placed in service as of July 31, 2020 and January 31, 2020, respectively. The costs associated with construction-in-progress are not amortized until placed in service. Depreciation and amortization expense was $1.0 million and $0.6 million for the three months ended July 31, 2020 and 2019, respectively, and $1.9 million and $1.0 million for the six months ended July 31, 2020 and 2019, respectively.

Deferred Contract Costs

Deferred Contract Costs	6 Months Ended
	Jul. 31, 2020
Revenue from Contract with Customer [Abstract]
Deferred Contract Costs	Deferred Contract CostsDeferred contract costs, which primarily consist of deferred sales commissions, were $26.8 million and $25.7 million as of July 31, 2020 and January 31, 2020, respectively. Amortization expense for deferred contract costs was $2.6 million and $1.8 million for the three months ended July 31, 2020 and 2019, respectively, and $5.1 million and $3.4 million for the six months ended July 31, 2020 and 2019, respectively. There was no impairment charge related to the costs capitalized for the periods presented.Deferred Revenue and Performance Obligations The following table presents the changes to the Company’s deferred revenue: Three Months Ended July 31, Six Months Ended July 31, 2020 2019 2020 2019 (in thousands) Deferred revenue, beginning of period $ 96,446 $ 66,545 $ 92,569 $ 64,104 Billings 55,448 51,613 109,111 91,368 Revenue recognized (50,714) (40,361) (100,500) (77,675) Deferred revenue, end of period $ 101,180 $ 77,797 $ 101,180 $ 77,797 For the three and six months ended July 31, 2020 and 2019, the majority of revenue recognized was from the deferred revenue balances at the beginning of each quarter. As of July 31, 2020 and January 31, 2020, future estimated revenue related to performance obligations for subscriptions with terms of more than one year that are unsatisfied or partially unsatisfied at the end of the reporting periods was approximately $81.4 million and $75.7 million, respectively. The Company expects to satisfy the substantial majority of these unsatisfied performance obligations over the next 24 months and the remainder thereafter. The Company applied the optional exemption for subscriptions with terms of less than a one year.

Leases

Leases	6 Months Ended
	Jul. 31, 2020
Leases [Abstract]
Leases	Leases Operating Leases The Company has entered into various non-cancellable operating leases for its office spaces with lease periods expiring between fiscal 2022 and fiscal 2029. The operating lease agreements generally provide for rental payments on a graduated basis and for options to renew, which could increase future minimum lease payments if exercised. Lease right-of-use assets and liabilities are recognized at the commencement date based on the present value of lease payments over the lease term. As our leases do not provide an implicit rate, we use our incremental borrowing rate based on the information available at the commencement date in determining the present value of lease payments. The lease right-of-use assets also include any lease payments made and exclude lease incentives such as tenant improvement allowances. Our operating leases typically include non-lease components such as common-area maintenance costs. We have elected to include non-lease components with lease payments for the purpose of calculating lease right-of-use assets and liabilities, to the extent that they are fixed. Non-lease components that are not fixed are expensed as incurred as variable lease payments. Leases with a term of one year or less are not recognized on our condensed consolidated balance sheet. We recognize lease expense for these leases on a straight-line basis over the lease term. The following tables present information about leases on our condensed consolidated balance sheet. As of July 31, 2020 (in thousands) Assets Lease right-of-use assets $ 26,885 Liabilities Lease liabilities 5,078 Lease liabilities, non-current 29,064 As of July 31, 2020, the weighted average remaining lease term was 6.1 years and the weighted average discount rate used to determine the net present value of the lease liabilities was 3.7%. The following table presents information about leases on our condensed consolidated statement of operations. Three Months Ended July 31, 2020 Six Months Ended July 31, 2020 (in thousands) Operating lease expense $ 1,445 $ 2,887 Short-term lease expense 261 560 Variable lease expense 361 663 The following table presents supplemental cash flow information about our leases. Three Months Ended July 31, 2020 Six Months Ended July 31, 2020 (in thousands) Cash paid for amounts included in the measurement of lease liabilities $ 1,149 $ 2,287 As of July 31, 2020, remaining maturities of lease liabilities are as follows: Year ending January 31, (in thousands) 2021 $ 3,104 2022 6,296 2023 6,489 2024 6,670 2025 6,869 Thereafter 8,928 Gross lease payments $ 38,356 Less: Imputed interest (4,214) Total $ 34,142

Debt and Financing Arrangements

Debt and Financing Arrangements	6 Months Ended
	Jul. 31, 2020
Debt Disclosure [Abstract]
Debt and Financing Arrangements	Debt and Financing Arrangements Convertible Senior Notes On June 25, 2020, the Company issued $287.5 million in aggregate principal amount of the Notes in a private offering pursuant to an Indenture dated June 25, 2020 (the “Indenture”). The total net proceeds from the debt offering, after deducting initial purchaser discounts and debt issuance costs, paid or payable by us, were $278.2 million. The Notes are senior, unsecured obligations of the Company and will accrue interest payable semiannually in arrears on January 1 and July 1 of each year, beginning on January 1, 2021, at a rate of 1.25% per year. The Notes will mature on July 1, 2025, unless such notes are converted, redeemed or repurchased earlier. The Notes are convertible into cash, shares of the Company’s common stock or a combination of cash and shares of the Company’s common stock, at the Company’s election in the manner and subject to the terms and conditions provided in the Indenture. Holders of the Notes may convert all or any portion of their Notes at their option at any time prior to the close of business on April 1, 2025, only under the following circumstances: • During any fiscal quarter commencing after the fiscal quarter ending on October 31, 2020 (and only during such fiscal quarter), if the last reported sale price of the Company’s common stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding fiscal quarter is greater than or equal to 130% of the conversion price on each applicable trading day; • During the five business day period after any ten consecutive trading day period (the measurement period) in which the “trading price” (as defined in the Indenture) per $1,000 principal amount of Notes for each trading day of the measurement period was less than 98% of the product of the last reported sale price of the Company’s common stock and the conversion rate on each such trading day; • If the Company calls such Notes for redemption, at any time prior to the close of business on the scheduled trading day immediately preceding the redemption date; or • Upon the occurrence of specified corporate events, as noted in the Indenture. On or after April 1, 2025 until the close of business on the second scheduled trading day immediately preceding the maturity date, holders of the Notes may convert all or any portion of their Notes at any time, regardless of the foregoing circumstances. The conversion rate will initially be 24.9507 shares of common stock per $1,000 principal amount of Notes, which is equivalent to an initial conversion price of approximately $40.08 per share of common stock. The conversion rate is subject to adjustment under certain circumstances in accordance with the terms of the Indenture, but will not be adjusted for accrued and unpaid interest. In addition, following certain corporate events that occur prior to the maturity date, the Company will, in certain circumstances, increase the conversion rate for a holder who elects to convert its Notes in connection with such a fundamental change, as defined in the Indenture. The Company may not redeem the Notes prior to July 6, 2023. The Company may redeem for cash all or any portion of the Notes, at its option, on a redemption date occurring on or after July 6, 2023 and prior to the 41st scheduled trading day immediately preceding the maturity date, if the last reported sale price of the common stock has been at least 130% of the conversion price for the Notes then in effect for at least 20 trading days (whether or not consecutive) during any 30 consecutive trading day period (including the last trading day of such period) ending on, and including the trading day immediately preceding the date on which the Company provides notice of redemption at a redemption price equal to 100% of the principal amount to be redeemed, plus accrued and unpaid interest to, but excluding, the redemption date. No sinking fund is provided for the Notes. If the Company undergoes a fundamental change (as defined in the Indenture), holders may require the Company to repurchase for cash all or any portion of their Notes at a fundamental change repurchase price equal to 100% of the principal amount of the Notes to be repurchased, plus any accrued and unpaid interest to, but excluding, the fundamental change repurchase date. The Indenture contains customary terms and covenants, including that upon certain events of default occurring and continuing, the trustee or the holders of at least 25% in aggregate principal amount of the outstanding Notes may declare the entire principal of all the Notes plus accrued and unpaid interest to be immediately due and payable. In accounting for the issuance of the Notes, the Company separated the Notes into liability and equity components. The carrying amount of the liability component was calculated using a discount rate of 7.30%, which was determined by measuring the fair value of a similar debt instrument that does not have an associated conversion feature. The carrying amount of the equity component representing the conversion option was $70.8 million and was determined by deducting the fair value of the liability component from the par value of the Notes. The equity component is not remeasured as long as it continues to meet the conditions for equity classification, and the equity component was recorded in additional paid-in-capital in the accompanying condensed consolidated balance sheet. The excess of the principal amount of the liability component over its carrying amount, or the debt discount, is amortized to interest expense at an annual effective interest rate of 7.88% over the contractual terms of the Notes. The interest rate was based on the interest rate of similar liabilities at the time of issuance that did not have associated convertible features. The debt component is classified as a long-term liability as of July 31, 2020. In accounting for the issuance costs related to the Notes, we allocated the total amount incurred to the liability and equity components of the Notes based on their relative values. Issuance costs attributable to the liability component were $7.0 million and will be amortized to interest expense using the effective interest method over the contractual term of the Notes. Issuance costs attributable to the equity component were $2.3 million and were netted with the equity component in additional paid-in capital. The net carrying amount of the liability component of the Notes was as follows: As of July 31, 2020 (in thousands) Principal $ 287,500 Less: unamortized debt discount (69,623) Less: unamortized issuance costs (6,901) Net carrying amount $ 210,976 The net carrying amount of the equity component of the Notes was as follows: As of July 31, 2020 (in thousands) Proceeds allocated to the conversion options (debt discount) $ 70,768 Less: issuance costs (2,290) Carrying amount of the equity component $ 68,478 Interest expense recognized related to the Notes is as follows: Three Months Ended July 31, 2020 (in thousands) Contractual interest expense $ 349 Amortization of debt discount 1,145 Amortization of debt issuance costs 114 Total interest expense related to the Notes $ 1,608 Capped Call Transactions In connection with the offering of the Notes, the Company entered into privately negotiated capped call transactions (the “Capped Calls”) with certain financial institution counterparties (the “Option Counterparties”). The Capped Calls are generally intended to reduce or offset the potential dilution to our common stock upon any conversion of the Notes with such reduction or offset, as the case may be, subject to a cap based on the cap price. For accounting purposes, the Capped Calls are separate transactions, and not part of the terms of the Notes. The Capped Calls are recorded in stockholders’ equity and are not accounted for as derivatives. The cost of $35.7 million incurred to purchase the Capped Calls were recorded as a reduction to additional paid-in capital in the accompanying condensed consolidated balance sheet. The Capped Calls each have an initial strike price of approximately $40.08 per share, subject to certain adjustments, which corresponds to the initial conversion price of the Notes. The Capped Calls have an initial cap price of $61.66 per share, subject to certain adjustments. The Capped Calls cover, subject to anti-dilution adjustments, approximately 7.2 million shares of our common stock. The Capped Calls are subject to automatic exercise over a 40 trading day period commencing on May 2, 2025, subject to earlier termination under certain circumstances.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jul. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Legal Matters From time to time in the normal course of business, the Company may be subject to various claims and other legal matters arising in the ordinary course of business. The Company investigates these claims as they arise and accrues estimates for resolution of legal and other contingencies when losses are probable and estimable. The Company is not currently a party to any legal proceedings and does not anticipate any pending or threatened litigation that would be expected to have a material adverse effect on its financial condition, results of operations, or cash flows. Warranties and Indemnification The Company has entered into service-level agreements with a portion of its customers defining levels of uptime reliability and performance and permitting those customers to receive credits if the Company fails to meet the defined levels of uptime. To date, the Company has not experienced any significant failures to meet defined levels of uptime reliability and performance as a result of those agreements and, as a result, the Company has not incurred or accrued any material liabilities related to these agreements in the financial statements.

Deferred Revenue and Performanc

Deferred Revenue and Performance Obligations	6 Months Ended
	Jul. 31, 2020
Revenue from Contract with Customer [Abstract]
Deferred Revenue and Performance Obligations	Deferred Contract CostsDeferred contract costs, which primarily consist of deferred sales commissions, were $26.8 million and $25.7 million as of July 31, 2020 and January 31, 2020, respectively. Amortization expense for deferred contract costs was $2.6 million and $1.8 million for the three months ended July 31, 2020 and 2019, respectively, and $5.1 million and $3.4 million for the six months ended July 31, 2020 and 2019, respectively. There was no impairment charge related to the costs capitalized for the periods presented.Deferred Revenue and Performance Obligations The following table presents the changes to the Company’s deferred revenue: Three Months Ended July 31, Six Months Ended July 31, 2020 2019 2020 2019 (in thousands) Deferred revenue, beginning of period $ 96,446 $ 66,545 $ 92,569 $ 64,104 Billings 55,448 51,613 109,111 91,368 Revenue recognized (50,714) (40,361) (100,500) (77,675) Deferred revenue, end of period $ 101,180 $ 77,797 $ 101,180 $ 77,797 For the three and six months ended July 31, 2020 and 2019, the majority of revenue recognized was from the deferred revenue balances at the beginning of each quarter. As of July 31, 2020 and January 31, 2020, future estimated revenue related to performance obligations for subscriptions with terms of more than one year that are unsatisfied or partially unsatisfied at the end of the reporting periods was approximately $81.4 million and $75.7 million, respectively. The Company expects to satisfy the substantial majority of these unsatisfied performance obligations over the next 24 months and the remainder thereafter. The Company applied the optional exemption for subscriptions with terms of less than a one year.

Common Stock and Stockholders'

Common Stock and Stockholders' Equity	6 Months Ended
	Jul. 31, 2020
Equity [Abstract]
Common Stock and Stockholders' Equity	Common Stock and Stockholders’ Equity Redeemable Convertible Preferred Stock Immediately prior to the completion of the IPO in April 2019, all shares of redeemable convertible preferred stock then outstanding were converted into 41,273,345 shares of common stock on a one-to-one basis and then immediately reclassified into common stock. Equity Incentive Plans The Company has two equity incentive plans: the 2010 Stock Plan (the “2010 Plan”) and the 2019 Equity Incentive Plan (the “2019 Plan”, collectively the “Stock Plans”). Upon completion of the Company’s IPO in April 2019, the Company ceased granting awards under the 2010 Plan, and all shares that remained available for future issuance under the 2010 Plan at that time were transferred to the 2019 Plan. The 2019 Plan superseded and replaced the 2010 Plan. As of July 31, 2020 and January 31, 2020, respectively, the Company was authorized to grant up to 17,679,277 shares and 13,126,301 shares of common stock under the Stock Plans. In March 2019, the Company granted 3,041,000 stock options to existing employees with 50 percent of these options vesting over four years from the grant date and 50 percent vesting over five years from the grant date. The Company currently uses authorized and unissued shares to satisfy stock award exercises. As of July 31, 2020 and January 31, 2020, there were 13,660,976 shares and 11,841,156 shares available for future issuance under the Stock Plans, respectively. Shares of common stock reserved for future issuance are as follows: July 31, 2020 Outstanding stock options and unvested RSUs outstanding 16,300,947 Available for future stock option and RSU grants 13,660,976 Available for ESPP 2,235,888 Total common stock reserved at July 31, 2020 32,197,811 Stock Option Activity Stock option activity is as follows: Number of Weighted Weighted Aggregate (in thousands) Outstanding at January 31, 2020 14,498,045 $ 7.37 7.8 years $ 231,300 Granted 231,028 $ 21.44 Exercised (1,287,830) $ 4.43 Canceled (663,393) $ 10.88 Outstanding at July 31, 2020 12,777,850 $ 7.73 7.3 years $ 290,647 Vested as of July 31, 2020 7,675,279 $ 4.76 6.7 years $ 197,386 The Company uses the Black-Scholes option-pricing model to estimate the fair value of stock options on the date of grant. The Company accounts for forfeitures as they occur. The following assumptions were used to calculate the fair value of employee stock option grants made during the periods: Three Months Ended July 31, Six Months Ended July 31, 2020 2019 2020 2019 Expected dividend yield — — — — Expected volatility 43.9 % 42.0% - 42.1% 43.3% - 43.9% 42.0% - 42.8% Expected term (years) 6.1 6.0 - 6.1 6.1 5.5 - 6.9 Risk-free interest rate 0.41 % 1.80 % 0.41% - 0.47% 1.80% - 2.48% Stock options granted during the three months ended July 31, 2020 and 2019 had a weighted average grant date fair value of $12.59 and $23.08 per share, respectively. The aggregate intrinsic value of stock options exercised during the three months ended July 31, 2020 and 2019 was $11.6 million and $10.5 million, respectively. Stock options granted during the six months ended July 31, 2020 and 2019 had a weighted average grant date fair value of $8.96 and $10.83 per share, respectively. The aggregate intrinsic value of stock options exercised during the six months ended July 31, 2020 and 2019 was $23.0 million and $30.5 million, respectively. The intrinsic value for options exercised is the difference between the market value of the stock and the exercise price of the stock option at the date of exercise. As of July 31, 2020 there was approximately $37.0 million of total unrecognized compensation cost related to unvested stock options granted under the Stock Plans, which will be recognized over a weighted average period of 2.9 years. Restricted Stock Units A summary of the Company’s RSU activity and related information is as follow: Number of RSUs Weighted Outstanding at January 31, 2020 1,114,911 $ 28.10 Granted 2,682,462 $ 17.76 Vested, net of shares withheld for employee payroll taxes (93,942) $ 22.33 Canceled (180,334) $ 21.60 Outstanding at July 31, 2020 3,523,097 $ 20.69 The Company uses the fair value of RSUs based on the fair value of the underlying shares on the date of grant. The Company accounts for forfeitures as they occur. As of July 31, 2020, there was $67.1 million of unrecognized stock-based compensation expense related to unvested RSUs, which is expected to be recognized over a weighted average period of 3.5 years based on vesting under the award service conditions. Employee Stock Purchase Plan In April 2019, the Board adopted and approved the 2019 Employee Stock Purchase Plan, which became effective on April 11, 2019. The ESPP initially reserved and authorized the issuance of up to a total of 1,850,000 shares of common stock to participating employees. Pursuant to the terms of the ESPP, the number of shares reserved under the ESPP increased by 777,916 shares on February 1, 2020. The ESPP generally provides for 24-month offering periods, with each offering period consisting of four six-month purchase periods, except for the initial offering period which began on April 11, 2019 and ended on December 13, 2019. On each purchase date, eligible employees will purchase the shares at a price per share equal to 85% of the lesser of (1) the fair market value of the Company’s stock as of the beginning of the offering period or (2) the fair market value of the Company’s stock on the purchase date, as defined in the ESPP. During the three months ended July 31, 2020 and 2019, the Company recognized $1.2 million and $1.8 million of stock-based compensation expense related to the ESPP, respectively. During the six months ended July 31, 2020 and 2019, the Company recognized $2.8 million and $2.2 million of stock-based compensation expense related to the ESPP, respectively. During the three months ended July 31, 2020 and 2019, the Company withheld $1.6 million and $2.6 million in contributions from employees, respectively. During the six months ended July 31, 2020 and 2019, the Company withheld $3.5 million and $2.6 million in contributions from employees, respectively. During the three and six months ended July 31, 2020, 181,253 shares of common stock were issued under the ESPP at a purchase price of $19.63. During the three and six months ended July 31, 2019, there were no purchases related to the ESPP. Stock-Based Compensation Stock-based compensation expense included in the Company’s condensed consolidated statements of operations is as follows: Three Months Ended July 31, Six Months Ended July 31, 2020 2019 2020 2019 (in thousands) Cost of revenue $ 263 $ 327 $ 607 $ 470 Research and development 2,469 1,437 4,652 2,297 Sales and marketing 2,870 2,326 5,155 3,790 General and administrative 4,366 3,143 7,862 5,488 Total $ 9,968 $ 7,233 $ 18,276 $ 12,045

Net Loss Per Share

Net Loss Per Share	6 Months Ended
	Jul. 31, 2020
Earnings Per Share [Abstract]
Net Loss Per Share	Net Loss per Share The following table presents the calculation of basic and diluted net loss per share: Three Months Ended July 31, Six Months Ended July 31, 2020 2019 2020 2019 (in thousands, except per share amounts) Numerator: Net loss $ (14,688) $ (12,570) $ (26,147) $ (24,634) Denominator: Weighted average shares used in calculating net loss per share, basic and diluted 78,775 75,433 78,278 54,327 Net loss per share, basic and diluted $ (0.19) $ (0.17) $ (0.33) $ (0.45) Since the Company was in a loss position for the periods presented, basic net loss per share is the same as diluted net loss per share as the inclusion of all potential common shares outstanding would have been anti-dilutive. Potentially dilutive securities that were not included in the diluted per share calculations because they would be anti-dilutive were as follows: As of July 31, 2020 2019 (in thousands) Shares subject to outstanding common stock awards 16,298 16,278 Convertible senior notes 7,173 — Unvested early exercised stock options — 205 Restricted stock awards purchased with promissory notes 142 429 Shares issuable pursuant to the 2019 Employee Stock Purchase Plan 64 125 Total 23,677 17,037

Income Taxes

Income Taxes	6 Months Ended
	Jul. 31, 2020
Income Tax Disclosure [Abstract]
Income Taxes	Income TaxesThe Company's provision for income taxes for interim periods is determined using an estimate of its annual effective tax rate, adjusted for discrete items, if any, that arise during the period. Each quarter, the Company updates its estimate of the annual effective tax rate, and if the estimated annual effective tax rate changes, the Company makes a cumulative adjustment in such period. The Company's quarterly tax provision, and estimate of its annual effective tax rate, is subject to variation due to several factors, including variability in pre-tax income (or loss), the mix of jurisdictions to which such income (or loss) relates, changes in how the Company does business, and tax law developments. The Company's estimated effective tax rate for the year differs from the U.S. statutory rate of 21% as a result of our U.S. losses for which no benefit will be realized, as well as our foreign operations which are subject to tax rates that differ from those in the U.S.

Geographic Information

Geographic Information	6 Months Ended
	Jul. 31, 2020
Segment Reporting [Abstract]
Geographic Information	Geographic Information Revenue by location is determined by the billing address of the customer. The following table sets forth revenue by geographic area: Three Months Ended July 31, Six Months Ended July 31, 2020 2019 2020 2019 (in thousands) United States $ 38,997 $ 31,592 $ 77,269 $ 61,060 International 11,717 8,769 23,231 16,615 Total $ 50,714 $ 40,361 $ 100,500 $ 77,675

Subsequent Events

Subsequent Events	6 Months Ended
	Jul. 31, 2020
Subsequent Events [Abstract]
Subsequent Events	Subsequent EventsThe Company has evaluated subsequent events through September 3, 2020.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Jul. 31, 2020
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”), and applicable rules and regulations of the Securities and Exchange Commission (“SEC”) regarding interim financial reporting. The condensed consolidated balance sheet as of January 31, 2020 was derived from the audited consolidated financial statements as of that date but does not include all of the information and notes required by GAAP for complete financial statements. Certain information and note disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. Therefore, these condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and the related notes thereto as of and for the year ended January 31, 2020, included in the Company’s Annual Report on Form 10-K, filed with the SEC. The condensed consolidated financial statements include the results of PagerDuty, Inc. and its wholly owned subsidiaries. All intercompany balances and transactions have been eliminated upon consolidation. In the opinion of management, the information contained herein reflects all adjustments necessary for a fair presentation of the Company’s results of operations, financial position, cash flows, and statements of stockholders’ equity. The results of operations for the three and six months ended July 31, 2020 are not necessarily indicative of the results to be expected for the full year ending January 31, 2021 or for any other interim period, or for any future year. The Company’s fiscal year ends on January 31. References to fiscal 2021, for example, refer to the fiscal year ended January 31, 2021.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make, on an ongoing basis, estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the consolidated financial statements, and the reported amounts of revenue and expenses during the reporting periods. Actual results could differ from these estimates. The Company’s most significant estimates and judgments involve the valuation of the Company’s stock-based awards, including the determination of fair value of common stock (prior to the closing of the IPO) and the fair value of the employee stock purchase plan (“ESPP”) expense, period of benefit for amortizing deferred contract costs, the determination of the allowance for doubtful accounts, the provision for income taxes, including the related valuation allowance and any uncertain tax positions, fair value of the liability and equity components of the Notes, and the incremental borrowing rate for lease liabilities, among others. Management bases its estimates on historical experience and on various other assumptions which management believes to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities.
Concentrations of Risk and Significant Customers	Concentrations of Risk and Significant Customers The Company’s financial instruments that are exposed to concentrations of credit risk consist primarily of cash and cash equivalents, held-to-maturity investments, available-for-sale investments, and accounts receivable. All of the Company’s cash and cash equivalents and investments are invested in money market funds, United States (“U.S.”) Treasury securities, commercial paper, corporate debt securities, or U.S. Government agency securities that management believes to be of high credit quality.
Segment Information	Segment Information The Company manages operations and allocates resources as one operating segment. The Company’s chief operating decision maker (“CODM”) is its chief executive officer, who reviews financial information presented on a consolidated basis for purposes of making operating decisions, assessing financial performance, and allocating resources.
Convertible Senior Notes	Convertible Senior Notes The Notes are accounted for in accordance with Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Subtopic 470-20, Debt with Conversion and Other Options
Accounts Receivable and Allowance for Doubtful Accounts	Accounts Receivable and Allowance for Doubtful AccountsAccounts receivable are recorded at the invoiced amount, net of allowance for doubtful accounts. The allowance is based upon historical loss patterns, the age of each past due invoice, and an evaluation of the potential risk of loss associated with delinquent accounts. The allowance also reflects current market conditions and reasonable and supportable forecasts of future economic conditions.
Recently Adopted/Issued Accounting Pronouncements	Recently Adopted Accounting Pronouncements In February 2016, the FASB issued Accounting Standards Update No. 2016-02 Leases, (“Topic 842”) (“ASU 2016-02”), which would require lessees to recognize most leases on their balance sheets, whether operating or financing, while continuing to recognize the expenses on their income statements in a manner similar to current practice. The guidance states that a lessee would recognize a lease liability for the obligation to make lease payments and a right-to-use asset for the right to use the underlying asset for the lease term. The Company adopted the standard using the optional alternative method on a prospective basis with an effective date as of the beginning of the Company’s fiscal year, February 1, 2020, and applied it to the operating leases that existed on that date. Prior year comparative financial information was not recast under the new standard and continues to be presented under ASC 840. The Company elected to utilize the package of practical expedients available for expired or existing contracts which allowed the Company to carryforward historical assessments of (a) whether contracts are or contain leases, (b) lease classification, and (c) initial direct costs. The Company elected to apply the short-term lease exception for all leases. Under the short-term lease exception, the Company will not recognize right-of-use assets or lease liabilities for leases that, at the acquisition date, have a remaining lease term of 12 months or less. As a result of implementing this guidance, the Company recognized a net operating right-of-use asset of $29.1 million and a $35.9 million operating lease liability in its condensed consolidated balance sheets as of February 1, 2020. The adoption of this guidance did not affect our condensed consolidated statements of operations or our condensed consolidated statements of cash flows. See Note 7, “Leases” for further information. In June 2016, the FASB issued Accounting Standards Update No. 2016-13, Financial Instruments—Credit Losses (“Topic 326”) Measurement of Credit Losses on Financial Instruments (“ASU 2016-13”), which requires an entity to utilize a new impairment model known as the current expected credit loss (“CECL”) model to estimate its lifetime “expected credit loss” and record an allowance that, when deducted from the amortized cost basis of the financial asset, presents the net amount expected to be collected on the financial asset. The CECL model is expected to result in more timely recognition of credit losses. This guidance also requires new disclosures for financial assets measured at amortized cost, loans, and available-for-sale debt securities. The Company adopted the standard as of the beginning of the Company’s fiscal year, February 1, 2020. The adoption of this guidance did not have a material impact to the condensed consolidated financial statements. In August 2018, the FASB issued Accounting Standards Update No. 2018-13, Fair Value Measurement (“Topic 820”) (“ASU 2018-13”), which modifies the disclosure requirements for fair value measurements for certain types of investments. We adopted this standard in the first quarter of fiscal year 2020. The adoption did not have an effect on our consolidated financial statements. In December 2019, the FASB issued Accounting Standards Update No. 2019-12, Income Taxes (“Topic 740”): Simplifying the Accounting for Income Taxes (“ASU 2019-12”), which is intends to simplify various aspects related to accounting for income taxes. ASU 2019-12 removes certain exceptions to the general principles in Topic 740 and also clarifies and amends existing guidance to improve consistent application. ASU 2019-12 is effective for the Company beginning in fiscal 2022, although early adoption is permitted. The Company early adopted the standard as of the beginning of the Company’s fiscal year, February 1, 2020. The adoption of this guidance did not have a material impact to the condensed consolidated financial statements. Recently Issued Accounting Pronouncements In August 2020, the FASB issued Accounting Standard Update No. 2020-06, Debt—Debt with Conversion Options (“Subtopic 470-20”) and Derivatives and Hedging—Contracts in Entity’s Own Equity (“Subtopic 815-40”) (“ASU 2020-06”), which simplifies the accounting for certain financial instruments with characteristics of liabilities and equity, including convertible instruments and contracts on an entity's own equity. ASU 2020-06 also improves and amends the related Earnings Per Share guidance for both Subtopics. The ASU is part of the FASB's simplification initiative, which aims to reduce unnecessary complexity in U.S. GAAP. ASU 2020-06 will be effective for annual reporting periods beginning after December 15, 2021. Early adoption is permitted, but not before annual reporting periods beginning after December 15, 2020. We are currently evaluating the impact of the new guidance on our consolidated financial statements.
Fair Value Measurements	The Company measures its financial assets and liabilities at fair value each reporting period using a fair value hierarchy that prioritizes the use of observable inputs and minimizes 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, as follows: Level 1—Valuations based on observable inputs that reflect quoted prices for identical assets or liabilities in active markets. Level 2—Valuations based on inputs that are directly or indirectly observable in the marketplace. Level 3—Valuations based on unobservable inputs that are supported by little or no market activity.
Operating Leases	Operating Leases The Company has entered into various non-cancellable operating leases for its office spaces with lease periods expiring between fiscal 2022 and fiscal 2029. The operating lease agreements generally provide for rental payments on a graduated basis and for options to renew, which could increase future minimum lease payments if exercised. Lease right-of-use assets and liabilities are recognized at the commencement date based on the present value of lease payments over the lease term. As our leases do not provide an implicit rate, we use our incremental borrowing rate based on the information available at the commencement date in determining the present value of lease payments. The lease right-of-use assets also include any lease payments made and exclude lease incentives such as tenant improvement allowances. Our operating leases typically include non-lease components such as common-area maintenance costs. We have elected to include non-lease components with lease payments for the purpose of calculating lease right-of-use assets and liabilities, to the extent that they are fixed. Non-lease components that are not fixed are expensed as incurred as variable lease payments.

Cash, Cash Equivalents, and I_2

Cash, Cash Equivalents, and Investments (Tables)	6 Months Ended
	Jul. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Components of Cash and Cash Equivalents	Cash, cash equivalents, and investments consisted of the following: As of July 31, 2020 As of January 31, 2020 (in thousands) Cash and cash equivalents Cash $ 282,342 $ 2,131 Money market funds 91,296 118,899 U.S. Treasury securities 3,000 2,994 Total cash and cash equivalents $ 376,638 $ 124,024 Available-for-sale investments: U.S. Treasury securities $ 37,031 $ 24,987 Commercial paper 22,011 20,132 Corporate debt securities 161,887 149,248 U.S. Government agency securities — 4,973 Total available-for-sale investments $ 220,929 $ 199,340 Held-to-maturity investments: U.S. Treasury securities $ 4,003 $ 9,016 Commercial paper — 5,985 Corporate debt securities — 13,034 Total held-to-maturities investments $ 4,003 $ 28,035 Total investments $ 224,932 $ 227,375
Components of Available-for-sale Investments	Cash, cash equivalents, and investments consisted of the following: As of July 31, 2020 As of January 31, 2020 (in thousands) Cash and cash equivalents Cash $ 282,342 $ 2,131 Money market funds 91,296 118,899 U.S. Treasury securities 3,000 2,994 Total cash and cash equivalents $ 376,638 $ 124,024 Available-for-sale investments: U.S. Treasury securities $ 37,031 $ 24,987 Commercial paper 22,011 20,132 Corporate debt securities 161,887 149,248 U.S. Government agency securities — 4,973 Total available-for-sale investments $ 220,929 $ 199,340 Held-to-maturity investments: U.S. Treasury securities $ 4,003 $ 9,016 Commercial paper — 5,985 Corporate debt securities — 13,034 Total held-to-maturities investments $ 4,003 $ 28,035 Total investments $ 224,932 $ 227,375
Components of Held-to-maturity Investments	Cash, cash equivalents, and investments consisted of the following: As of July 31, 2020 As of January 31, 2020 (in thousands) Cash and cash equivalents Cash $ 282,342 $ 2,131 Money market funds 91,296 118,899 U.S. Treasury securities 3,000 2,994 Total cash and cash equivalents $ 376,638 $ 124,024 Available-for-sale investments: U.S. Treasury securities $ 37,031 $ 24,987 Commercial paper 22,011 20,132 Corporate debt securities 161,887 149,248 U.S. Government agency securities — 4,973 Total available-for-sale investments $ 220,929 $ 199,340 Held-to-maturity investments: U.S. Treasury securities $ 4,003 $ 9,016 Commercial paper — 5,985 Corporate debt securities — 13,034 Total held-to-maturities investments $ 4,003 $ 28,035 Total investments $ 224,932 $ 227,375 The following tables summarize the Company’s investments’ adjusted cost, net unrealized gains, and fair value by significant investment category as of July 31, 2020 and January 31, 2020. Gross realized gains or losses from sales of available-for-sale securities were not material for the six months ended July 31, 2020. As of July 31, 2020 Cost Basis Unrealized Gain, Net Recorded Basis Available-for-sale investments: U.S. Treasury securities $ 36,966 $ 65 $ 37,031 Commercial paper 22,008 3 22,011 Corporate debt securities 160,899 988 161,887 Total available-for-sale investments $ 219,873 $ 1,056 $ 220,929 Held-to-maturity investments: U.S. Treasury securities $ 4,003 $ — $ 4,003 Total held-to-maturities investments $ 4,003 $ — $ 4,003 Total investments $ 223,876 $ 1,056 $ 224,932 As of January 31, 2020 Cost Basis Unrealized Gain, Net Recorded Basis Available-for-sale investments: U.S. Treasury securities $ 24,978 $ 9 $ 24,987 Commercial paper 20,128 4 20,132 Corporate debt securities 149,124 124 149,248 U.S. Government agency securities 4,973 — 4,973 Total available-for-sale investments $ 199,203 $ 137 $ 199,340 Held-to-maturity investments: U.S. Treasury securities $ 9,016 $ — $ 9,016 Commercial paper 5,985 — 5,985 Corporate debt securities 13,034 — 13,034 Total held-to-maturities investments $ 28,035 $ — $ 28,035 Total investments $ 227,238 $ 137 $ 227,375
Summary of Carrying Value of Available-for-sale Investments	The following tables summarize the Company’s investments’ adjusted cost, net unrealized gains, and fair value by significant investment category as of July 31, 2020 and January 31, 2020. Gross realized gains or losses from sales of available-for-sale securities were not material for the six months ended July 31, 2020. As of July 31, 2020 Cost Basis Unrealized Gain, Net Recorded Basis Available-for-sale investments: U.S. Treasury securities $ 36,966 $ 65 $ 37,031 Commercial paper 22,008 3 22,011 Corporate debt securities 160,899 988 161,887 Total available-for-sale investments $ 219,873 $ 1,056 $ 220,929 Held-to-maturity investments: U.S. Treasury securities $ 4,003 $ — $ 4,003 Total held-to-maturities investments $ 4,003 $ — $ 4,003 Total investments $ 223,876 $ 1,056 $ 224,932 As of January 31, 2020 Cost Basis Unrealized Gain, Net Recorded Basis Available-for-sale investments: U.S. Treasury securities $ 24,978 $ 9 $ 24,987 Commercial paper 20,128 4 20,132 Corporate debt securities 149,124 124 149,248 U.S. Government agency securities 4,973 — 4,973 Total available-for-sale investments $ 199,203 $ 137 $ 199,340 Held-to-maturity investments: U.S. Treasury securities $ 9,016 $ — $ 9,016 Commercial paper 5,985 — 5,985 Corporate debt securities 13,034 — 13,034 Total held-to-maturities investments $ 28,035 $ — $ 28,035 Total investments $ 227,238 $ 137 $ 227,375
Summary of Contractual Maturities of Available-for-sale Securities	The following table presents the Company’s available-for-sale securities by contractual maturity date as of July 31, 2020 and January 31, 2020: As of July 31, 2020 Cost Basis Recorded Basis Due within one year $ 179,103 $ 179,726 Due between one to five years 40,770 41,203 Total $ 219,873 $ 220,929 As of January 31, 2020 Cost Basis Recorded Basis Due within one year $ 128,127 $ 128,169 Due between one to five years 71,076 71,171 Total $ 199,203 $ 199,340

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jul. 31, 2020
Fair Value Disclosures [Abstract]
Summary of Information about Company's Financial Assets	The following table presents information about the Company’s financial assets that are required to be measured or disclosed at fair value using the above input categories: As of July 31, 2020 Level 1 Level 2 Level 3 Total (in thousands) Money market funds $ 91,296 $ — $ — $ 91,296 U.S. Treasury securities 3,000 41,034 — 44,034 Commercial paper — 22,011 — 22,011 Corporate debt securities — 161,887 — 161,887 Total $ 94,296 $ 224,932 $ — $ 319,228 Included in cash equivalents $ 94,296 Included in investments $ 224,932 As of January 31, 2020 Level 1 Level 2 Level 3 Total (in thousands) Money market funds $ 118,899 $ — $ — $ 118,899 U.S. Treasury securities 2,994 34,003 — 36,997 Commercial paper — 26,117 — 26,117 Corporate debt securities — 162,282 — 162,282 U.S. Government agency securities — 4,973 — 4,973 Total $ 121,893 $ 227,375 $ — $ 349,268 Included in cash equivalents $ 121,893 Included in investments $ 227,375

Property and Equipment, Net (Ta

Property and Equipment, Net (Tables)	6 Months Ended
	Jul. 31, 2020
Property, Plant and Equipment [Abstract]
Property and Equipment, Net	Property and equipment, net, consisted of the following: As of July 31, 2020 As of January 31, 2020 (in thousands) Leasehold improvements $ 12,445 $ 12,257 Computers and equipment 5,838 4,431 Furniture and fixtures 3,159 2,540 Capitalized internal-use software 522 389 Gross property and equipment (1) 21,964 19,617 Accumulated depreciation and amortization (9,159) (7,248) Property and equipment, net $ 12,805 $ 12,369 (1) Gross property and equipment includes construction-in-progress for leasehold improvements and furniture and fixtures of $0.2 million and $5.1 million that had not yet been placed in service as of July 31, 2020 and January 31, 2020, respectively. The costs associated with construction-in-progress are not amortized until placed in service.

Leases (Tables)

Leases (Tables)	6 Months Ended
	Jul. 31, 2020
Leases [Abstract]
Information About Lease on Condensed Consolidated Balance Sheet	The following tables present information about leases on our condensed consolidated balance sheet. As of July 31, 2020 (in thousands) Assets Lease right-of-use assets $ 26,885 Liabilities Lease liabilities 5,078 Lease liabilities, non-current 29,064
Information About Leases on Condensed Consolidated Statement of Operations and Supplemental Cash Flow Information	The following table presents information about leases on our condensed consolidated statement of operations. Three Months Ended July 31, 2020 Six Months Ended July 31, 2020 (in thousands) Operating lease expense $ 1,445 $ 2,887 Short-term lease expense 261 560 Variable lease expense 361 663 The following table presents supplemental cash flow information about our leases. Three Months Ended July 31, 2020 Six Months Ended July 31, 2020 (in thousands) Cash paid for amounts included in the measurement of lease liabilities $ 1,149 $ 2,287
Schedule of Remaining Maturities of Lease Liabilities	As of July 31, 2020, remaining maturities of lease liabilities are as follows: Year ending January 31, (in thousands) 2021 $ 3,104 2022 6,296 2023 6,489 2024 6,670 2025 6,869 Thereafter 8,928 Gross lease payments $ 38,356 Less: Imputed interest (4,214) Total $ 34,142

Debt and Financing Arrangemen_2

Debt and Financing Arrangements (Tables)	6 Months Ended
	Jul. 31, 2020
Debt Disclosure [Abstract]
Net Carrying Amount of Liability and Equity Components of Convertible Notes	The net carrying amount of the liability component of the Notes was as follows: As of July 31, 2020 (in thousands) Principal $ 287,500 Less: unamortized debt discount (69,623) Less: unamortized issuance costs (6,901) Net carrying amount $ 210,976 The net carrying amount of the equity component of the Notes was as follows: As of July 31, 2020 (in thousands) Proceeds allocated to the conversion options (debt discount) $ 70,768 Less: issuance costs (2,290) Carrying amount of the equity component $ 68,478 Interest expense recognized related to the Notes is as follows: Three Months Ended July 31, 2020 (in thousands) Contractual interest expense $ 349 Amortization of debt discount 1,145 Amortization of debt issuance costs 114 Total interest expense related to the Notes $ 1,608

Deferred Revenue and Performa_2

Deferred Revenue and Performance Obligations (Tables)	6 Months Ended
	Jul. 31, 2020
Revenue from Contract with Customer [Abstract]
Summary of Deferred Revenue	The following table presents the changes to the Company’s deferred revenue: Three Months Ended July 31, Six Months Ended July 31, 2020 2019 2020 2019 (in thousands) Deferred revenue, beginning of period $ 96,446 $ 66,545 $ 92,569 $ 64,104 Billings 55,448 51,613 109,111 91,368 Revenue recognized (50,714) (40,361) (100,500) (77,675) Deferred revenue, end of period $ 101,180 $ 77,797 $ 101,180 $ 77,797

Common Stock and Stockholders_2

Common Stock and Stockholders' Equity (Tables)	6 Months Ended
	Jul. 31, 2020
Equity [Abstract]
Summary of Shares of Common Stock Reserved for Future Issuance	Shares of common stock reserved for future issuance are as follows: July 31, 2020 Outstanding stock options and unvested RSUs outstanding 16,300,947 Available for future stock option and RSU grants 13,660,976 Available for ESPP 2,235,888 Total common stock reserved at July 31, 2020 32,197,811
Schedule of Stock Option Activity	Stock option activity is as follows: Number of Weighted Weighted Aggregate (in thousands) Outstanding at January 31, 2020 14,498,045 $ 7.37 7.8 years $ 231,300 Granted 231,028 $ 21.44 Exercised (1,287,830) $ 4.43 Canceled (663,393) $ 10.88 Outstanding at July 31, 2020 12,777,850 $ 7.73 7.3 years $ 290,647 Vested as of July 31, 2020 7,675,279 $ 4.76 6.7 years $ 197,386
Schedule of Assumptions Used to Calculate Fair Value of Employee Stock Option Grants Made	The following assumptions were used to calculate the fair value of employee stock option grants made during the periods: Three Months Ended July 31, Six Months Ended July 31, 2020 2019 2020 2019 Expected dividend yield — — — — Expected volatility 43.9 % 42.0% - 42.1% 43.3% - 43.9% 42.0% - 42.8% Expected term (years) 6.1 6.0 - 6.1 6.1 5.5 - 6.9 Risk-free interest rate 0.41 % 1.80 % 0.41% - 0.47% 1.80% - 2.48%
Schedule of Restricted Stock Unit Activity	A summary of the Company’s RSU activity and related information is as follow: Number of RSUs Weighted Outstanding at January 31, 2020 1,114,911 $ 28.10 Granted 2,682,462 $ 17.76 Vested, net of shares withheld for employee payroll taxes (93,942) $ 22.33 Canceled (180,334) $ 21.60 Outstanding at July 31, 2020 3,523,097 $ 20.69
Schedule of Stock-based Compensation Expense	Stock-based compensation expense included in the Company’s condensed consolidated statements of operations is as follows: Three Months Ended July 31, Six Months Ended July 31, 2020 2019 2020 2019 (in thousands) Cost of revenue $ 263 $ 327 $ 607 $ 470 Research and development 2,469 1,437 4,652 2,297 Sales and marketing 2,870 2,326 5,155 3,790 General and administrative 4,366 3,143 7,862 5,488 Total $ 9,968 $ 7,233 $ 18,276 $ 12,045

Net Loss Per Share (Tables)

Net Loss Per Share (Tables)	6 Months Ended
	Jul. 31, 2020
Earnings Per Share [Abstract]
Calculation of Basic and Diluted Net Loss Per Share	The following table presents the calculation of basic and diluted net loss per share: Three Months Ended July 31, Six Months Ended July 31, 2020 2019 2020 2019 (in thousands, except per share amounts) Numerator: Net loss $ (14,688) $ (12,570) $ (26,147) $ (24,634) Denominator: Weighted average shares used in calculating net loss per share, basic and diluted 78,775 75,433 78,278 54,327 Net loss per share, basic and diluted $ (0.19) $ (0.17) $ (0.33) $ (0.45)
Schedule of Anti-dilutive Securities That Were Not Included in Diluted Per Share Calculations	Potentially dilutive securities that were not included in the diluted per share calculations because they would be anti-dilutive were as follows: As of July 31, 2020 2019 (in thousands) Shares subject to outstanding common stock awards 16,298 16,278 Convertible senior notes 7,173 — Unvested early exercised stock options — 205 Restricted stock awards purchased with promissory notes 142 429 Shares issuable pursuant to the 2019 Employee Stock Purchase Plan 64 125 Total 23,677 17,037

Geographic Information (Tables)

Geographic Information (Tables)	6 Months Ended
	Jul. 31, 2020
Segment Reporting [Abstract]
Disaggregation of Revenue By Geographic Location	Revenue by location is determined by the billing address of the customer. The following table sets forth revenue by geographic area: Three Months Ended July 31, Six Months Ended July 31, 2020 2019 2020 2019 (in thousands) United States $ 38,997 $ 31,592 $ 77,269 $ 61,060 International 11,717 8,769 23,231 16,615 Total $ 50,714 $ 40,361 $ 100,500 $ 77,675

Description of Business and B_2

Description of Business and Basis of Presentation (Details) - USD ($)	Apr. 15, 2019	Apr. 14, 2019	Jul. 31, 2020	Jul. 31, 2019	Jun. 30, 2020	Jun. 25, 2020
Subsidiary, Sale of Stock [Line Items]
Payments of other offering costs			$ 0	$ 5,208,000
IPO
Subsidiary, Sale of Stock [Line Items]
Number of shares issued and sold (in shares)	9,860,500
Public offering price (in dollars per share)	$ 24
Proceeds from sale of stock	$ 213,700,000
Payments of underwriters' commissions and discounts	16,600,000
Payments of other offering costs	$ 6,400,000
Convertible Senior Notes
Debt Instrument [Line Items]
Aggregate principal amount of debt issued					$ 287,500,000	$ 287,500,000
Stated interest rate					1.25%	1.25%
Common stock
Subsidiary, Sale of Stock [Line Items]
Number of shares as a result of conversion (in shares)		41,273,345		41,273,345

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Details) $ in Thousands	6 Months Ended
	Jul. 31, 2020USD ($)segment	Feb. 01, 2020USD ($)	Jan. 31, 2020USD ($)
Accounting Policies [Abstract]
Number of operating segments | segment	1
Allowance for doubtful accounts	$ 1,700		$ 800
Accounting Standards Update [Extensible List]	us-gaap:AccountingStandardsUpdate201602Member
Net operating right-of-use asset	$ 26,885	$ 29,100
Operating lease liability	$ 34,142	$ 35,900

Cash, Cash Equivalents, and I_3

Cash, Cash Equivalents, and Investments - Components of Cash and Cash Equivalents and Investments (Details) - USD ($) $ in Thousands	Jul. 31, 2020	Jan. 31, 2020	Jul. 31, 2019
Cash and cash equivalents
Cash	$ 282,342	$ 2,131
Money market funds	91,296	118,899
U.S. Treasury securities	3,000	2,994
Total cash and cash equivalents	376,638	124,024	$ 306,316
Debt Securities, Available-for-sale [Line Items]
Total available-for-sale investments	220,929	199,340
Schedule of Held-to-maturity Securities [Line Items]
Total held-to-maturities investments	4,003	28,035
Total investments	224,932	227,375
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Total available-for-sale investments	37,031	24,987
Schedule of Held-to-maturity Securities [Line Items]
Total held-to-maturities investments	4,003	9,016
Commercial paper
Debt Securities, Available-for-sale [Line Items]
Total available-for-sale investments	22,011	20,132
Schedule of Held-to-maturity Securities [Line Items]
Total held-to-maturities investments	0	5,985
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Total available-for-sale investments	161,887	149,248
Schedule of Held-to-maturity Securities [Line Items]
Total held-to-maturities investments	0	13,034
U.S. Government agency securities
Debt Securities, Available-for-sale [Line Items]
Total available-for-sale investments	$ 0	$ 4,973

Cash, Cash Equivalents, and I_4

Cash, Cash Equivalents, and Investments - Carrying Value of Investments (Details) - USD ($) $ in Thousands	Jul. 31, 2020	Jan. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Cost Basis	$ 219,873	$ 199,203
Unrealized Gain, Net	1,056	137
Recorded Basis	220,929	199,340
Schedule of Held-to-maturity Securities [Line Items]
Cost Basis	4,003	28,035
Unrealized Gain, Net	0	0
Recorded Basis	4,003	28,035
Total investments, Cost Basis	223,876	227,238
Total investments, Unrealized Gain (Loss), Net	1,056	137
Total investments	224,932	227,375
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Cost Basis	36,966	24,978
Unrealized Gain, Net	65	9
Recorded Basis	37,031	24,987
Schedule of Held-to-maturity Securities [Line Items]
Cost Basis	4,003	9,016
Unrealized Gain, Net	0	0
Recorded Basis	4,003	9,016
Commercial paper
Debt Securities, Available-for-sale [Line Items]
Cost Basis	22,008	20,128
Unrealized Gain, Net	3	4
Recorded Basis	22,011	20,132
Schedule of Held-to-maturity Securities [Line Items]
Cost Basis		5,985
Unrealized Gain, Net		0
Recorded Basis		5,985
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Cost Basis	160,899	149,124
Unrealized Gain, Net	988	124
Recorded Basis	$ 161,887	149,248
Schedule of Held-to-maturity Securities [Line Items]
Cost Basis		13,034
Unrealized Gain, Net		0
Recorded Basis		13,034
U.S. Government agency securities
Debt Securities, Available-for-sale [Line Items]
Cost Basis		4,973
Unrealized Gain, Net		0
Recorded Basis		$ 4,973

Cash, Cash Equivalents, and I_5

Cash, Cash Equivalents, and Investments - Contractual Maturity (Details) - USD ($) $ in Thousands	Jul. 31, 2020	Jan. 31, 2020
Cost Basis
Due within one year	$ 179,103	$ 128,127
Due between one to five years	40,770	71,076
Cost Basis	219,873	199,203
Recorded Basis
Due within one year	179,726	128,169
Due between one to five years	41,203	71,171
Recorded Basis	$ 220,929	$ 199,340

Cash, Cash Equivalents, and I_6

Cash, Cash Equivalents, and Investments - Additional Information (Details)	6 Months Ended
	Jul. 31, 2020USD ($)security
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Securities in a continuous net loss position for 12 months or longer | security	0
Impairment loss recorded | $	$ 0

Fair Value Measurements (Detail

Fair Value Measurements (Details) - Recurring - USD ($) $ in Thousands	Jul. 31, 2020	Jan. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Included in cash equivalents	$ 94,296	$ 121,893
Included in investments	224,932	227,375
Total	319,228	349,268
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	94,296	121,893
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	224,932	227,375
Fair value of convertible senior notes	301,000
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	0	0
U.S. Treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Included in investments	44,034	36,997
U.S. Treasury securities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Included in investments	3,000	2,994
U.S. Treasury securities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Included in investments	41,034	34,003
U.S. Treasury securities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Included in investments	0	0
Commercial paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Included in investments	22,011	26,117
Commercial paper | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Included in investments	0	0
Commercial paper | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Included in investments	22,011	26,117
Commercial paper | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Included in investments	0	0
Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Included in investments	161,887	162,282
Corporate debt securities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Included in investments	0	0
Corporate debt securities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Included in investments	161,887	162,282
Corporate debt securities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Included in investments	0	0
U.S. Government agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Included in investments		4,973
U.S. Government agency securities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Included in investments		0
U.S. Government agency securities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Included in investments		4,973
U.S. Government agency securities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Included in investments		0
Money market funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Included in cash equivalents	91,296	118,899
Money market funds | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Included in cash equivalents	91,296	118,899
Money market funds | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Included in cash equivalents	0	0
Money market funds | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Included in cash equivalents	$ 0	$ 0

Property and Equipment, Net (De

Property and Equipment, Net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019	Jan. 31, 2020
Property, Plant and Equipment [Line Items]
Gross property and equipment	$ 21,964		$ 21,964		$ 19,617
Accumulated depreciation and amortization	(9,159)		(9,159)		(7,248)
Property and equipment, net	12,805		12,805		12,369
Depreciation and amortization	1,000	$ 600	1,900	$ 1,000
Leasehold improvements
Property, Plant and Equipment [Line Items]
Gross property and equipment	12,445		12,445		12,257
Computers and equipment
Property, Plant and Equipment [Line Items]
Gross property and equipment	5,838		5,838		4,431
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Gross property and equipment	3,159		3,159		2,540
Capitalized internal-use software
Property, Plant and Equipment [Line Items]
Gross property and equipment	522		522		389
Construction-in-progress
Property, Plant and Equipment [Line Items]
Gross property and equipment	$ 200		$ 200		$ 5,100

Deferred Contract Costs (Detail

Deferred Contract Costs (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019	Jan. 31, 2020
Revenue from Contract with Customer [Abstract]
Deferred contract costs	$ 26,800,000		$ 26,800,000		$ 25,700,000
Amortization of deferred contract costs	2,600,000	$ 1,800,000	5,064,000	$ 3,442,000
Impairment loss in relation to costs capitalized	$ 0	$ 0	$ 0	$ 0

Leases - Information About Leas

Leases - Information About Lease on Condensed Consolidated Balance Sheet (Details) - USD ($) $ in Thousands	Jul. 31, 2020	Feb. 01, 2020
Assets
Lease right-of-use assets	$ 26,885	$ 29,100
Liabilities
Lease liabilities	5,078
Lease liabilities, non-current	$ 29,064

Leases - Additional Information

Leases - Additional Information (Details)	Jul. 31, 2020
Leases [Abstract]
Weighted average remaining lease term	6 years 1 month 6 days
Weighted average discount rate	3.70%

Leases - Information About Le_2

Leases - Information About Leases on Condensed Consolidated Statement of Operations (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jul. 31, 2020	Jul. 31, 2020
Leases [Abstract]
Operating lease expense	$ 1,445	$ 2,887
Short-term lease expense	261	560
Variable lease expense	$ 361	$ 663

Leases - Supplemental Cash Flow

Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jul. 31, 2020	Jul. 31, 2020
Leases [Abstract]
Cash paid for amounts included in the measurement of lease liabilities	$ 1,149	$ 2,287

Leases - Schedule of Remaining

Leases - Schedule of Remaining Maturities of Lease Liabilities (Details) - USD ($) $ in Thousands	Jul. 31, 2020	Feb. 01, 2020
Leases [Abstract]
2021	$ 3,104
2022	6,296
2023	6,489
2024	6,670
2025	6,869
Thereafter	8,928
Gross lease payments	38,356
Less: Imputed interest	(4,214)
Total	$ 34,142	$ 35,900

Debt and Financing Arrangemen_3

Debt and Financing Arrangements - Additional Information (Details) $ / shares in Units, shares in Millions	Jun. 25, 2020USD ($)day$ / sharesshares	Jul. 31, 2020USD ($)	Jul. 31, 2019USD ($)	Jun. 30, 2020USD ($)
Debt Instrument [Line Items]
Net proceeds from debt offering, after deducting initial purchaser discounts and debt issuance costs paid or payable | $	$ 278,200,000
Conversion rate	0.0249507
Initial conversion price (in dollars per share) | $ / shares	$ 40.08
Carrying amount of equity component representing conversion option | $	$ 70,800,000	$ 70,768,000
Issuance costs attributable to equity component | $		2,290,000
Net cost incurred to purchase Capped Calls | $	$ 35,700,000	35,708,000	$ 0
Capped Calls
Debt Instrument [Line Items]
Initial strike price (in dollars per share) | $ / shares	$ 40.08
Cap price (in dollars per share) | $ / shares	$ 61.66
Number of shares of common stock covered by Capped Calls (in shares) | shares	7.2
Automatic exercise period for Capped Calls, trading days	40
Debt Conversion Terms, One
Debt Instrument [Line Items]
Threshold trading days	20
Threshold consecutive trading days	30
Threshold percentage of stock price trigger	130.00%
Debt Conversion Terms, Two
Debt Instrument [Line Items]
Threshold trading days	5
Threshold consecutive trading days	10
Threshold percentage of product of last reported sales price of common stock and conversion rate on each such trading day	98.00%
On or after July 6, 2023
Debt Instrument [Line Items]
Threshold trading days	20
Threshold consecutive trading days	30
Threshold percentage of stock price trigger	130.00%
Convertible Senior Notes
Debt Instrument [Line Items]
Aggregate principal amount of debt issued | $	$ 287,500,000			$ 287,500,000
Stated interest rate	1.25%			1.25%
Event of default, option to accelerate amounts due, minimum percentage of aggregate principal amount of outstanding debt	25.00%
Effective interest rate	7.88%
Issuance costs attributable to liability component | $		$ 7,000,000
Convertible Senior Notes | Discount Rate
Debt Instrument [Line Items]
Liability component calculation, measurement input	0.0730
Convertible Senior Notes | On or after July 6, 2023
Debt Instrument [Line Items]
Redemption, threshold trading days immediately preceding maturity date	41
Redemption price, percentage of principal amount to be redeemed	100.00%
Convertible Senior Notes | Fundamental Change
Debt Instrument [Line Items]
Redemption price, percentage of principal amount to be redeemed	100.00%

Debt and Financing Arrangemen_4

Debt and Financing Arrangements - Net Carrying Amount (Details) - USD ($) $ in Thousands	Jul. 31, 2020	Jun. 25, 2020
Equity Component:
Proceeds allocated to the conversion options (debt discount)	$ 70,768	$ 70,800
Less: issuance costs	(2,290)
Carrying amount of the equity component	68,478
Convertible Senior Notes
Liability Component:
Principal	287,500
Less: unamortized debt discount	(69,623)
Less: unamortized issuance costs	(6,901)
Net carrying amount	$ 210,976

Debt and Financing Arrangemen_5

Debt and Financing Arrangements - Interest Expense (Details) - Convertible Senior Notes $ in Thousands	3 Months Ended
	Jul. 31, 2020USD ($)
Debt Instrument [Line Items]
Contractual interest expense	$ 349
Amortization of debt discount	1,145
Amortization of debt issuance costs	114
Total interest expense related to the Notes	$ 1,608

Deferred Revenue and Performa_3

Deferred Revenue and Performance Obligations - Deferred Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Increase (Decrease) In Contract with Customer, Liability [Roll Forward]
Deferred revenue, beginning of period	$ 96,446	$ 66,545	$ 92,569	$ 64,104
Billings	55,448	51,613	109,111	91,368
Revenue recognized	(50,714)	(40,361)	(100,500)	(77,675)
Deferred revenue, end of period	$ 101,180	$ 77,797	$ 101,180	$ 77,797

Deferred Revenue and Performa_4

Deferred Revenue and Performance Obligations - Additional Information (Details) - USD ($) $ in Millions	Jul. 31, 2020	Jan. 31, 2020
Revenue from Contract with Customer [Abstract]
Future estimated revenue related to performance obligations	$ 81.4	$ 75.7

Deferred Revenue and Performa_5

Deferred Revenue and Performance Obligations - Performance Obligations (Details)	Jul. 31, 2020
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-08-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, period	24 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-08-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, period

Common Stock and Stockholders_3

Common Stock and Stockholders' Equity - Additional Information (Details) $ / shares in Units, $ in Thousands	Feb. 01, 2020shares	Apr. 14, 2019shares	Apr. 11, 2019purchase_periodshares	Mar. 31, 2019shares	Jul. 31, 2020USD ($)$ / sharesshares	Jul. 31, 2019USD ($)$ / sharesshares	Jul. 31, 2020USD ($)equity_incentive_plan$ / sharesshares	Jul. 31, 2019USD ($)$ / sharesshares	Jan. 31, 2020shares
Subsidiary, Sale of Stock [Line Items]
Number of equity incentive plans | equity_incentive_plan							2
Number of shares authorized for grant (in shares)					17,679,277		17,679,277		13,126,301
Options granted (in shares)				3,041,000			231,028
Number of shares available for grant (in shares)					13,660,976		13,660,976		11,841,156
Weighted average grant date fair value of stock options (in dollars per share) | $ / shares					$ 12.59	$ 23.08	$ 8.96	$ 10.83
Aggregate intrinsic value of stock options exercised | $					$ 11,600	$ 10,500	$ 23,000	$ 30,500
Unrecognized compensation cost related to unvested stock options | $					37,000		37,000
Stock-based compensation expense | $					9,968	7,233	$ 18,276	12,045
Stock options
Subsidiary, Sale of Stock [Line Items]
Unrecognized compensation cost related to unvested awards, period for recognition							2 years 10 months 24 days
Stock options | 50% vest over four years from grant date
Subsidiary, Sale of Stock [Line Items]
Vesting percentage				50.00%
Vesting period				4 years
Stock options | 50% vest over five years from grant date
Subsidiary, Sale of Stock [Line Items]
Vesting percentage				50.00%
Vesting period				5 years
RSUs
Subsidiary, Sale of Stock [Line Items]
Unrecognized compensation cost related to unvested awards, period for recognition							3 years 6 months
Unrecognized compensation cost related to unvested RSUs | $					$ 67,100		$ 67,100
ESPP
Subsidiary, Sale of Stock [Line Items]
Number of shares authorized for grant (in shares)			1,850,000
Number of shares available for grant (in shares)					2,235,888		2,235,888
Increase in number of shares reserved under ESPP (in shares)	777,916
Offering period			24 months
Number of purchase periods within each offering period | purchase_period			4
Purchase period			6 months
Purchase price as a percentage of fair market value of stock on the offering date or the purchase date			85.00%
Stock-based compensation expense | $					$ 1,200	1,800	$ 2,800	2,200
Amount withheld on behalf of employees for future purchase | $					$ 1,600	$ 2,600	$ 3,500	$ 2,600
Shares purchased (in shares)					181,253	0	181,253	0
Purchase price (in dollars per share) | $ / shares					$ 19.63		$ 19.63
Common stock
Subsidiary, Sale of Stock [Line Items]
Number of shares as a result of conversion (in shares)		41,273,345						41,273,345
Conversion ratio		1

Common Stock and Stockholders_4

Common Stock and Stockholders' Equity - Shares Available for Issuance (Details) - shares	Jul. 31, 2020	Jan. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant (in shares)	13,660,976	11,841,156
Total common stock reserved at period end (in shares)	32,197,811
Stock options and RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding stock options and unvested RSUs outstanding (in shares)	16,300,947
Number of shares available for grant (in shares)	13,660,976
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant (in shares)	2,235,888

Common Stock and Stockholders_5

Common Stock and Stockholders' Equity - Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	6 Months Ended	12 Months Ended
	Mar. 31, 2019	Jul. 31, 2020	Jan. 31, 2020
Number of Shares
Outstanding, beginning balance (in shares)		14,498,045
Granted (in shares)	3,041,000	231,028
Exercised (in shares)		(1,287,830)
Canceled (in shares)		(663,393)
Outstanding, ending balance (in shares)		12,777,850	14,498,045
Weighted Average Exercise Price
Outstanding, beginning balance (in dollars per share)		$ 7.37
Granted (in dollars per share)		21.44
Exercised (in dollars per share)		4.43
Canceled (in dollars per share)		10.88
Outstanding, ending balance (in dollars per share)		$ 7.73	$ 7.37
Weighted Average Remaining Contractual Term
Outstanding		7 years 3 months 18 days	7 years 9 months 18 days
Aggregate Intrinsic Value
Outstanding		$ 290,647	$ 231,300
Vested
Number of shares (in shares)		7,675,279
Weighted average exercise price (in dollars per share)		$ 4.76
Weighted average remaining contractual term		6 years 8 months 12 days
Aggregate intrinsic value		$ 197,386

Common Stock and Stockholders_6

Common Stock and Stockholders' Equity - Assumptions Used to Calculate Fair Value of Employee Stock Option Grants Made (Details) - Employee - Stock options	3 Months Ended		6 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected dividend yield	0.00%	0.00%	0.00%	0.00%
Expected volatility	43.90%
Expected volatility, minimum		42.00%	43.30%	42.00%
Expected volatility, maximum		42.10%	43.90%	42.80%
Expected term (years)	6 years 1 month 6 days		6 years 1 month 6 days
Risk-free interest rate	0.41%	1.80%
Risk-free interest rate, minimum			0.41%	1.80%
Risk-free interest rate, maximum			0.47%	2.48%
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (years)		6 years		5 years 6 months
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (years)		6 years 1 month 6 days		6 years 10 months 24 days

Common Stock and Stockholders_7

Common Stock and Stockholders' Equity - Restricted Stock Units Activity (Details) - RSUs	6 Months Ended
	Jul. 31, 2020$ / sharesshares
Number of RSUs
Outstanding, beginning balance (in shares) | shares	1,114,911
Granted (in shares) | shares	2,682,462
Vested, net of shares withheld for employee payroll taxes (in shares) | shares	(93,942)
Canceled (in shares) | shares	(180,334)
Outstanding, ending balance (in shares) | shares	3,523,097
Weighted Average Grant Date Fair Value Per Share
Outstanding, beginning balance (in dollars per share) | $ / shares	$ 28.10
Granted (in dollars per share) | $ / shares	17.76
Vested, net of shares withheld for employee payroll taxes (in dollars per share) | $ / shares	22.33
Canceled (in dollars per share) | $ / shares	21.60
Outstanding, ending balance (in dollars per share) | $ / shares	$ 20.69

Common Stock and Stockholders_8

Common Stock and Stockholders' Equity - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	$ 9,968	$ 7,233	$ 18,276	$ 12,045
Cost of revenue
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	263	327	607	470
Research and development
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	2,469	1,437	4,652	2,297
Sales and marketing
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	2,870	2,326	5,155	3,790
General and administrative
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	$ 4,366	$ 3,143	$ 7,862	$ 5,488

Net Loss Per Share - Calculatio

Net Loss Per Share - Calculation of Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Numerator:
Net loss	$ (14,688)	$ (12,570)	$ (26,147)	$ (24,634)
Denominator:
Weighted average shares used in calculating net loss per share, basic and diluted (in shares)	78,775	75,433	78,278	54,327
Net loss per share, basic and diluted (in dollars per share)	$ (0.19)	$ (0.17)	$ (0.33)	$ (0.45)

Net Loss Per Share - Anti-dilut

Net Loss Per Share - Anti-dilutive Securities (Details) - shares shares in Thousands	6 Months Ended
	Jul. 31, 2020	Jul. 31, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	23,677	17,037
Shares subject to outstanding common stock awards
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	16,298	16,278
Convertible senior notes
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	7,173	0
Unvested early exercised stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	0	205
Restricted stock awards purchased with promissory notes
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	142	429
Shares issuable pursuant to the 2019 Employee Stock Purchase Plan
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	64	125

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Income Tax Disclosure [Abstract]
Income tax expense	$ 248	$ 236	$ 479	$ 481

Geographic Information - Revenu

Geographic Information - Revenue by Location (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 50,714	$ 40,361	$ 100,500	$ 77,675
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	38,997	31,592	77,269	61,060
International
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 11,717	$ 8,769	$ 23,231	$ 16,615

Geographic Information - Additi

Geographic Information - Additional Information (Details) - Long-Lived Assets - Geographic Concentration Risk	6 Months Ended	12 Months Ended
	Jul. 31, 2020	Jan. 31, 2020
United States
Concentration Risk [Line Items]
Concentration risk, percentage	87.00%	76.00%
Canada
Concentration Risk [Line Items]
Concentration risk, percentage	13.00%	23.00%
United Kingdom
Concentration Risk [Line Items]
Concentration risk, percentage		1.00%

Uncategorized Items - pd-202007

Label	Element	Value
Restricted Cash	us-gaap_RestrictedCash	$ 0
Restricted Cash	us-gaap_RestrictedCash	$ 53,000