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Equity (Tables)
 3 Months Ended
Apr. 30, 2022
Share-based Payment Arrangement [Abstract]  
Schedule of Shares Reserved For Future Issuance
The Company had reserved shares of common stock for future issuance as follows (in thousands):

April 30, 2022January 31, 2022
2012 Equity Incentive Plan:
Options outstanding39,195 42,043 
Restricted stock units outstanding3,966 4,530 
2020 Equity Incentive Plan:
Shares available for future grants55,679 45,446 
Restricted stock units outstanding10,235 5,082 
Options outstanding642 — 
2020 Employee Stock Purchase Plan:
Shares available for future grants11,148 8,209 
Total shares of common stock reserved for future issuance120,865 105,310 
Option Activity Rollforward
Stock option activity and activity regarding shares available for grant under the Plans during the three months ended April 30, 2022 was as follows:
Shares
Available for Grant
(in thousands)		Number of Options Outstanding
(in thousands)		Weighted-
Average
Exercise Price		Weighted-Average Remaining Contractual Life
(in years)		Aggregate
Intrinsic
Value
(in thousands)
Balance—January 31, 2022
45,446 42,043 $7.53 6.9$11,283,299 
Shares authorized15,619 — $— 
Options granted(642)642 $207.56 
Options exercised— (2,448)$6.18 
Options forfeited400 (400)$6.98 
RSUs granted(5,763)— 
Shares withheld related to net share settlement of RSUs292 — 
RSUs forfeited327 — 
Balance—April 30, 2022
55,679 39,837 $10.84 6.7$6,421,133 
Vested and exercisable as of April 30, 2022
24,179 $6.82 6.4$3,980,779 
Option Rollforward Schedule
Stock option activity and activity regarding shares available for grant under the Plans during the three months ended April 30, 2022 was as follows:
Shares
Available for Grant
(in thousands)		Number of Options Outstanding
(in thousands)		Weighted-
Average
Exercise Price		Weighted-Average Remaining Contractual Life
(in years)		Aggregate
Intrinsic
Value
(in thousands)
Balance—January 31, 2022
45,446 42,043 $7.53 6.9$11,283,299 
Shares authorized15,619 — $— 
Options granted(642)642 $207.56 
Options exercised— (2,448)$6.18 
Options forfeited400 (400)$6.98 
RSUs granted(5,763)— 
Shares withheld related to net share settlement of RSUs292 — 
RSUs forfeited327 — 
Balance—April 30, 2022
55,679 39,837 $10.84 6.7$6,421,133 
Vested and exercisable as of April 30, 2022
24,179 $6.82 6.4$3,980,779 
Schedule of Unvested RSU Rollforward
RSU activity during the three months ended April 30, 2022 was as follows:

Number of Shares
(in thousands)		Weighted-Average Grant Date
Fair Value
per Share
Unvested Balance—January 31, 2022
9,612 $180.08 
Granted5,763 $201.89 
Vested(848)$161.90 
Forfeited(327)$202.80 
Unvested Balance—April 30, 2022
14,200 $189.50 
Schedule of Unvested RSA Rollforward
Restricted common stock activity during the three months ended April 30, 2022 was as follows:

Outside of the Plans
Number of Shares
(in thousands)		Weighted-Average Grant Date
Fair Value
per Share
Unvested Balance—January 31, 2022
380 $2.11 
Granted409 $229.13 
Vested(90)$2.10 
Unvested Balance—April 30, 2022
699 $134.99 
Valuation Assumptions Schedule The following table summarizes the assumptions used in estimating the fair value of stock options granted to employees during the three months ended April 30, 2022:
Three Months Ended April 30, 2022
Expected term (in years)6.0
Expected volatility50.0 %
Risk-free interest rate1.8 %
Expected dividend yield— %
Valuation Assumptions Other Than Stock Options Schedule
The following table summarizes the assumptions used in estimating the fair value of employee stock purchase rights granted under the 2020 ESPP during the three months ended April 30, 2022 and 2021:

Three Months Ended April 30,
20222021
Expected term (in years)0.50.5
Expected volatility58.9 %49.5 %
Risk-free interest rate0.9 %0.1 %
Expected dividend yield— %— %
Share-based Compensation Schedule
Stock-based compensation included in the condensed consolidated statements of operations was as follows (in thousands):
Three Months Ended April 30,
20222021
Cost of revenue$22,635 $23,103 
Sales and marketing52,469 46,053 
Research and development73,593 55,819 
General and administrative23,796 26,039 
Stock-based compensation, net of amounts capitalized172,493 151,014 
Capitalized stock-based compensation6,495 6,299 
Total stock-based compensation$178,988 $157,313