What is an Ad Impression?
The “ad impression” metric represents the number of times an ad is displayed. If, for example, your ad is shown 100 times within 25 different apps over a seven-day period, your ad will have received 100 ad impressions within the specified timeframe.
Ad Impressions vs. Ad Clicks
It’s important to note the difference between ad impressions and ad clicks. As stated above, the “ad impression” metric represents the number of times an ad is shown. The “ad click” metric, on the other hand, represents the number of times an ad is clicked on.
Publishers are paid for every 1,000 ad impressions they generate for advertisers. This figure is measured by “effective cost per mille” metric, better known as eCPM.