An ad impression is a recorded occasion on which an ad is shown under the platform's counting rules. Google Ads can count one on a search-results page or participating site.[1] Its unit is a display during a defined period, not a unique person, click or purchase.
One user can generate multiple impressions. Compare volume with reach and frequency and check whether reporting uses served or viewable impressions. More displays may support visibility but do not prove attentive viewing. Keep the counting basis consistent across campaigns and periods.
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Compiled with AI assistance using public sources. General explanation, not individual legal or tax advice. Describing a concept does not mean Zoloo offers it as a feature.