Ad impression
An ad impression records one exposure of an advertisement according to the rules of the system that measures it
What it means, how it is used and where it comes up, with its related concepts.
What it is and how it works
It differs from reach, which tries to count unique people or accounts. It is worth distinguishing between served impressions, viewable impressions and actual attention. These measures answer different questions and should not be treated as equivalent when evaluating a campaign.
Also known as
Impression
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