Advertising Guide
Third-party reporting
Apple bases its campaign delivery and pacing on impressions. There may be variances when comparing third-party reporting metrics because viewability standards may vary among third-party vendors. Reporting metrics include:
Requested impressions: When an initial request is made through the Apple proxy to a third-party server.
Video impressions: When at least 50% of the video ad is displayed and playing on-screen for at least two continuous seconds.
Impressions: When at least 50% of the banner is fully displayed on screen for one second or more.