Goodwill and Acquired Intangible Assets, Net |
Goodwill and Acquired Intangible Assets, Net The following table presents goodwill activity (in thousands): | | | | | | December 31, 2019 | $ | 137,121 | | Goodwill acquired | 112,356 | | Foreign currency translation | 296 | | December 31, 2020 | $ | 249,773 | | Goodwill acquired | 762,553 | | Foreign currency translation | (45,899) | | December 31, 2021 | $ | 966,427 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Weighted- Average Remaining Useful Life (Years) | | As of December 31, 2021 | | As of December 31, 2020 | | | Gross Carrying Value | | Accumulated Amortization | | Net Book Value | | Gross Carrying Value | | Accumulated Amortization | | Net Book Value | Long-lived intangible assets: | | | | | | | | | | | | | | Apps | 5.0 | | $ | 1,939,180 | | | $ | (529,012) | | | $ | 1,410,168 | | | $ | 1,222,417 | | | $ | (232,832) | | | $ | 989,585 | | Customer Relationships | 11.3 | | 145,870 | | | (8,442) | | | 137,428 | | | — | | | — | | | — | | User base | 4.3 | | 68,817 | | | (27,369) | | | 41,448 | | | 68,817 | | | (17,617) | | | 51,200 | | License asset | 1.5 | | 25,640 | | | — | | | 25,640 | | | 28,551 | | | (10,918) | | | 17,633 | | Developed technology | 5.2 | | 87,851 | | | (21,435) | | | 66,416 | | | 14,946 | | | (8,489) | | | 6,457 | | Other | 5.6 | | 34,895 | | | (6,648) | | | 28,247 | | | 23,321 | | | (1,864) | | | 21,457 | | Total long-lived intangible assets | | | 2,302,253 | | | (592,906) | | | 1,709,347 | | | 1,358,052 | | | (271,720) | | | 1,086,332 | | Short-lived intangible assets: | | | | | | | | | | | | | | Apps | 0.4 | | 40,348 | | | (38,724) | | | 1,624 | | | 29,869 | | | (25,599) | | | 4,270 | | Total intangible assets | | | $ | 2,342,601 | | | $ | (631,630) | | | $ | 1,710,971 | | | $ | 1,387,921 | | | $ | (297,319) | | | $ | 1,090,602 | |
As of December 31, 2021 and 2020, short-lived mobile Apps were included in prepaid expenses and other current assets. The Company recorded amortization expenses related to acquired intangible assets as follows (in thousands): | | | | | | | | | | | | | | | | | | | Year Ended December 31, | | 2021 | | 2020 | | 2019 | Cost of revenue | $ | 373,726 | | | $ | 228,339 | | | $ | 74,787 | | Sales and marketing | 22,661 | | | 11,587 | | | 7,641 | | Total | $ | 396,387 | | | $ | 239,926 | | | $ | 82,428 | |
As of December 31, 2021, the expected future amortization expense related to acquired intangible assets is estimated as follows (in thousands): | | | | | | 2022 | $ | 339,254 | | 2023 | 329,084 | | 2024 | 320,537 | | 2025 | 320,537 | | 2026 | 313,223 | | Thereafter | 88,336 | | Total | $ | 1,710,971 | |
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