eCPM (effective Cost Per Mille)

eCPM (effective Cost Per Mille) is a metric used in digital advertising to measure how much an advertiser earns or costs for every 1,000 ad impressions. It helps advertisers and publishers evaluate the profitability of ad campaigns regardless of the specific pricing model (e.g., Cost Per Click, Cost Per Action). For example, if an ad campaign earns $50 from 10,000 impressions, the eCPM is $5. It provides a standardized way to compare different campaigns, indicating the revenue-generating potential per thousand views or clicks, making it a key indicator of ad performance.