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Stock-Based Compensation - Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jul. 31, 2022 | Jul. 31, 2021 | Jul. 31, 2022 | Jul. 31, 2021
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |
Total stock-based compensation expense | $ 16,082 | $ 20,402 | $ 34,168 | $ 35,000
Unrecognized compensation cost, stock options | 119,000 |  | 119,000 |
Stock-based compensation related to internal-use software development | 200 | 300 | 300 | 1,000
Cost of revenue |  |  |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |
Total stock-based compensation expense | 1,341 | 2,312 | 2,723 | 3,757
Sales and marketing |  |  |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |
Total stock-based compensation expense | 6,149 | 7,377 | 12,525 | 12,878
Research and development |  |  |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |
Total stock-based compensation expense | 4,202 | 5,828 | 8,722 | 9,816
General and administrative |  |  |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |
Total stock-based compensation expense | $ 4,390 | $ 4,885 | $ 10,198 | $ 8,549
Options to purchase common stock |  |  |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |
Unrecognized compensation cost, period for recognition (in years) |  |  | 2 years 8 months 26 days |

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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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