Marketing / Data & Analytics
First-Party Match Rate match rate (onboarding match, clean-room overlap)
The share of your uploaded customer records that a platform or partner could match to its own users.
The fork, why two teams get different numbers
Both the denominator and the meaning of "match" fork.
In the Metric Library
- The full fork, both definitions worked all the way through
- The trap that makes the number lie, on a real export
- Every formula variant, spelled out
- The reconciliation anchor, what to tie it to and when to refuse
Reference: IAB (data clean room & identity guidance · reference) · data-onboarding convention