Audience Exclusion is the practice of preventing specific audiences from seeing a campaign or ad group.
It matters because most visitors do not convert on the first visit. Retargeting terminology helps teams create thoughtful follow-up sequences, avoid wasted impressions, and respect audience exclusions and privacy expectations.
Example
An advertiser can exclude an eligible audience of recent lead-form submitters from another campaign requesting the same form submission. Verify which campaign level uses the exclusion and how quickly new submitters enter that audience.