Impression
01 Definition
Impression meaning: One recorded display of content or an advertisement.
An impression is counted when a platform records that an item was served or displayed according to its rules. It does not necessarily mean a person noticed or remembered it.
Also called
ad view
Why it matters
How Impression fits the work
Impressions are the base for delivery frequency CPM and many rate metrics.
In context
The campaign delivered one million impressions to its target audience.
Practical note
Definitions differ by platform and should be separated from viewable impressions and unique reach.