Glossary

Frequency Cap

A rule that limits how many times a user can be exposed to an advertisement within a defined period.

Media BuyingFoundationAlso called: Freq CapSource: Industry consensus

Definition

A rule that limits how many times a user can be exposed to an advertisement within a defined period.

Why it matters

Frequency caps are the direct operational control for the reach/frequency tradeoff, and forgetting to set one is one of the most common, most avoidable QA failures.

Key consideration

A cap set at the campaign level and a cap set at the line-item level can conflict silently — verify which layer is actually enforcing the cap before assuming it is working as configured.

Related terms

Practitioner notes

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