TCF v2 is intended to fully replace TCF v1.1 and extends its functionality.
The IAB Tech Lab’s US Privacy String communicates signals regarding consumer privacy and choice under US privacy regulation. Version 1 supports requirements made under the California Consumer Privacy Act (CCPA).
TCFv1 is now fully retired. IAB continued to allow and support TCF v.1.1 until August 15 2020, at which point no new v1.1 strings may be created. Existing v1.1 strings in absence of v2 string were be supported for another 45 days after that, through September 30 2020.
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