Ad impressions
Ad impressions indicate the number of times an ad is displayed within an app. They're different from ad clicks, as the number of impressions does not reflect the number of times the ad was clicked.
What is an ad impression?
An ad impression, also known as an ad view, quantifies the number of digital views an advertisement, post, or web page receives. It's a numerical value that tells you how many sets of "eyeballs" have potentially viewed your content.
There has been some debate about the accuracy of ad impressions as a metric, as they don't reflect whether a viewer actually interacted with the content. Regardless, impressions remain one of the most critical digital marketing metrics out there.
Why? Because they tell us how many potential customers have been exposed to a piece of content. And that's priceless information for marketers.
The two types of ad impressions
Served impressions tell you how many times your ad has been delivered to a web page by the ad server. This is the most common way of measuring impressions and is often used as a baseline metric for ad campaigns.
Viewable impressions measure the actual number of times your target audience sees the ad.