Stockholders' Equity and Equity Incentive Plans (Tables)

12 Months Ended

Jan. 31, 2023

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,
	2023	2022
Stock options outstanding	4,800,616	6,195,205
RSUs outstanding	21,868,533	5,546,366
ESPP purchase rights outstanding	2,851,856	1,784,687
Remaining shares available for future issuance under the 2011 and 2019 plan	51,367,359	56,620,720
Remaining shares available for future issuance under the ESPP	11,930,797	10,685,867
Total shares of Class A common stock reserved	92,819,161	80,832,845

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, 2022	6,195,205	$	8.08	6.0	$	905,744
Exercised	(1,299,758)	$	6.60		$	121,539
Canceled/forfeited/expired	(94,831)	$	21.11
Outstanding as of January 31, 2023	4,800,616	$	8.22	4.9	$	322,929
Vested and expected to vest as of January 31, 2023	4,800,616	$	8.22	4.9	$	322,929
Exercisable as of January 31, 2023	4,747,885	$	7.77	4.9	$	321,287

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, 2022	5,546,366	$	232.58
Granted	22,136,660	$	93.20
Vested	(3,977,915)	$	173.22
Forfeited	(1,836,578)	$	148.82
Unvested as of January 31, 2023	21,868,533	$	109.31

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,
	2023	2022	2021
Expected term (years)	0.5 - 2.0	0.5 - 2.1	0.5 - 2.1
Expected volatility	57.6% - 64.6%	40.3% - 75.0%	40.3% - 75.0%
Risk-free interest rate	2.2% - 4.8%	0.0% - 2.5%	0.1% - 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,
	2023		2022		2021
	(in thousands)
Cost of revenue	$	174,546	$	69,612	$	34,960
Research and development	361,720		113,000		50,161
Sales and marketing	532,371		229,297		146,377
General and administrative	217,115		65,378		44,320
Total stock-based compensation expense	1,285,752		477,287		275,818
Benefit from income taxes	(199,971)		(84,245)		—
Total stock-based compensation expense recorded to net income	$	1,085,781	$	393,042	$	275,818