Ad-Impression
Description
An ad impression is counted when an ad is fetched and displayed to a user.
Definition
It's the basic unit of ad delivery each time an ad loads on a user 's screen (whether viewed or not), it counts as an impression.
Why Is Ad-Impression Important for App Marketers?
It 's foundational for CPM billing, reach calculation, and impression-based campaign performance.
Where You Can Use Ad-Impression
CPM campaigns, viewability tracking, ad servers, mediation layers, programmatic reporting.
What Are the Best Practices
- Focus on viewable impressions, avoid auto-refresh abuse, segment by geo/platform, track fill rate.