Media & Publishing / Ad Operations
Ad Fill Rate ~ (aliases: fill %, filled-impression rate)
Of the ad opportunities a page asked to fill, the share that actually got a paid ad.
The fork, why two teams get different numbers
The numerator and denominator both 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/ad-server operating convention (reference); MRC impression measurement (reference)