Measurement
Cost Per Mille
The amount an advertiser pays for one thousand impressions of an ad.
What it means in practice
Cost per mille is calculated from media spend and delivered impressions for a defined campaign or placement. It reflects the price of exposure and can vary with audience targeting, inventory, bidding, and seasonality.
Why it matters
Cost per mille helps buyers judge whether a campaign is securing distribution at an acceptable price.
How it is used
Creator teams compare cost per mille across whitelisted ads, boosted posts, and platform placements when allocating media budget.
Also called
CPM, cost per thousand