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Revenue by Geographic Area and Groups of Similar Products - Revenue by Geographic Area (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Revenue by geographic area: |  |  |
Revenue | $ 4,153,945 | $ 3,826,321 | $ 2,841,839
Twilio Segment |  |  |
Revenue by geographic area: |  |  |
Revenue | 295,252 | 276,234 | 200,965
Twilio Communications | Twilio Communications |  |  |
Revenue by geographic area: |  |  |
Revenue | 3,858,693 | 3,550,087 | 2,640,874
Messaging | Twilio Communications |  |  |
Revenue by geographic area: |  |  |
Revenue | 2,184,752 | 2,066,300 | 1,416,265
Voice | Twilio Communications |  |  |
Revenue by geographic area: |  |  |
Revenue | 511,728 | 474,790 | 428,484
Email and Marketing Campaigns | Twilio Communications |  |  |
Revenue by geographic area: |  |  |
Revenue | 440,185 | 399,314 | 330,627
Other | Twilio Communications |  |  |
Revenue by geographic area: |  |  |
Revenue | 722,028 | 609,683 | 465,498
United States |  |  |
Revenue by geographic area: |  |  |
Revenue | $ 2,757,470 | $ 2,510,525 | $ 1,927,302
United States | Revenue from Contract with Customer Benchmark | Geographic Concentration Risk |  |  |
Percentage of revenue by geographic area: |  |  |
Percentage of revenue | 66.00% | 66.00% | 68.00%
International |  |  |
Revenue by geographic area: |  |  |
Revenue | $ 1,396,475 | $ 1,315,796 | $ 914,537
International | Revenue from Contract with Customer Benchmark | Geographic Concentration Risk |  |  |
Percentage of revenue by geographic area: |  |  |
Percentage of revenue | 34.00% | 34.00% | 32.00%

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