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Equity (Tables)
 9 Months Ended
Oct. 31, 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):

October 31, 2022January 31, 2022
2012 Equity Incentive Plan:
Options outstanding36,464 42,043 
Restricted stock units outstanding3,003 4,530 
2020 Equity Incentive Plan:
Options outstanding642 — 
Restricted stock units outstanding12,558 5,082 
Shares available for future grants53,544 45,446 
2020 Employee Stock Purchase Plan:
Shares available for future grants11,046 8,209 
Total shares of common stock reserved for future issuance117,257 105,310 
Option Activity Rollforward
A summary of stock option activity and activity regarding shares available for grant under the Plans during the nine months ended October 31, 2022 is 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 canceled400 (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 
Options exercised— (1,494)$5.65 
Options canceled180 (180)$7.32 
RSUs granted(1,374)— 
Shares withheld related to net share settlement of RSUs260 — 
RSUs forfeited462 — 
Balance—July 31, 2022
55,207 38,163 $11.06 6.5$5,336,155 
Options exercised—(984)$7.49 
Options canceled73(73)$8.32 
RSUs granted(2,361)— 
Shares withheld related to net share settlement of RSUs274— 
RSUs forfeited351— 
Balance—October 31, 2022
53,544 37,106 $11.16 6.2$5,564,360 
Vested and exercisable as of October 31, 2022
28,513 $7.81 6.0$4,352,427 
Option Rollforward Schedule
A summary of stock option activity and activity regarding shares available for grant under the Plans during the nine months ended October 31, 2022 is 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 canceled400 (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 
Options exercised— (1,494)$5.65 
Options canceled180 (180)$7.32 
RSUs granted(1,374)— 
Shares withheld related to net share settlement of RSUs260 — 
RSUs forfeited462 — 
Balance—July 31, 2022
55,207 38,163 $11.06 6.5$5,336,155 
Options exercised—(984)$7.49 
Options canceled73(73)$8.32 
RSUs granted(2,361)— 
Shares withheld related to net share settlement of RSUs274— 
RSUs forfeited351— 
Balance—October 31, 2022
53,544 37,106 $11.16 6.2$5,564,360 
Vested and exercisable as of October 31, 2022
28,513 $7.81 6.0$4,352,427 
Schedule of Unvested RSU Rollforward
A summary of RSU activity during the nine months ended October 31, 2022 is 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 
Granted1,374 $145.19 
Vested(775)$156.97 
Forfeited(462)$196.87 
Unvested Balance—July 31, 2022
14,337 $186.77 
Granted2,361 $172.86 
Vested(786)$165.42 
Forfeited(351)$218.21 
Unvested Balance—October 31, 2022
15,561 $185.03 
Schedule of Unvested RSA Rollforward
A summary of restricted common stock activity during the nine months ended October 31, 2022 is 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 
Vested(90)$2.10 
Unvested Balance—July 31, 2022
609 $154.73 
Vested(91)$2.10 
Unvested Balance—October 31, 2022
518 $181.37 
Valuation Assumptions Schedule The following table summarizes the assumptions used in estimating the fair value of stock options granted to employees during the nine months ended October 31, 2022:
Nine Months Ended October 31, 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 and nine months ended October 31, 2022 and 2021:

Three Months Ended October 31,Nine Months Ended October 31,
2022202120222021
Expected term (in years)0.50.50.50.5
Expected volatility74.8 %37.3 %
58.9% - 74.8%
37.3% - 49.5%
Risk-free interest rate3.8 %0.1 %
0.9% - 3.8%
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 October 31,Nine Months Ended October 31,
2022202120222021
Cost of revenue$27,794 $21,163 $76,499 $66,380 
Sales and marketing65,010 43,074 177,641 141,463 
Research and development110,231 56,142 280,721 174,788 
General and administrative26,128 24,008 75,976 76,761 
Stock-based compensation, net of amounts capitalized229,163 144,387 610,837 459,392 
Capitalized stock-based compensation7,792 6,085 21,002 19,322 
Total stock-based compensation$236,955 $150,472 $631,839 $478,714