Cost per thousand impressions
Cost per thousand impressions, or CPM, expresses the cost of showing an ad a thousand times
What it means, how it is used and where it comes up, with its related concepts.
What it is and how it works
It is calculated by dividing spend by impressions and multiplying by a thousand. It helps compare media buying, but should be interpreted alongside audience quality, viewability and context. A recorded impression does not necessarily mean human attention.
Also known as
CPM
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