Stockholders' Equity and Equity Incentive Plans (Tables)

12 Months Ended

Jan. 31, 2024

Equity [Abstract]

Schedule of Stock by Class Reserved for Future Issuance

We have the following shares of Class A common stock reserved for future issuance:

	As of January 31,
	2024	2023
Stock options outstanding	3,314,228	4,800,616
RSUs outstanding	26,040,557	21,868,533
ESPP purchase rights outstanding	2,086,604	2,851,856
Remaining shares available for future issuance under the 2011 and 2019 plan	50,559,254	51,367,359
Remaining shares available for future issuance under the ESPP	14,712,385	11,930,797
Total shares of Class A common stock reserved	96,713,028	92,819,161

Schedule of Stock Option Activity Under Equity Incentive Plan

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

	Stock Options
	Outstanding Stock Options	Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Life (Years)	Aggregate Intrinsic Value
	(in thousands, except share, life and per share data)
Outstanding as of January 31, 2023	4,800,616	$	8.22	4.9	$	322,929
Exercised	(1,464,158)	$	6.96		$	90,039
Canceled/forfeited/expired	(22,230)	$	92.95
Outstanding and Exercisable as of January 31, 2024	3,314,228	$	8.21	3.9	$	189,921

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

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

	RSUs
	Unvested RSUs	Weighted-Average Grant Date Fair Value Per Share
Unvested as of January 31, 2023	21,868,533	$	109.31
Granted	19,864,395	$	69.27
Vested	(11,349,453)	$	102.87
Forfeited	(4,342,918)	$	99.98
Unvested as of January 31, 2024	26,040,557	$	83.14

Schedule of Assumptions for Estimating Fair Value of ESPP Purchase Rights

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

	Year Ended January 31,
	2024	2023	2022
Expected term (years)	0.5 - 2.0	0.5 - 2.0	0.5 - 2.1
Expected volatility	30.0% - 57.6%	57.6% - 64.6%	40.3% - 75.0%
Risk-free interest rate	4.6% - 5.4%	2.2% - 4.8%	0.0% - 2.5%
Expected dividend yield	—	—	—

Schedule of Stock-based Compensation Expense by Line Item

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

	Year Ended January 31,
	2024		2023		2022
	(in thousands)
Cost of revenue	$	143,798	$	174,546	$	69,612
Research and development	336,309		361,720		113,000
Sales and marketing	381,298		532,371		229,297
General and administrative	195,756		217,115		65,378
Total stock-based compensation expense	1,057,161		1,285,752		477,287
Benefit from income taxes	(197,068)		(199,971)		(84,245)
Total stock-based compensation expense recorded to net income	$	860,093	$	1,085,781	$	393,042