ECPM (Effective Cost Per Mille)
eCPM (Effective Cost Per Mille) represents the estimated earnings a publisher makes for every 1 000 ad impressions, regardless of the pricing model used. It standardizes performance across different campaigns—whether paid by click, view, or action—so publishers and advertisers can compare profitability easily.
The formula for eCPM is simple: (Total Earnings ÷ Total Impressions) × 1 000 = eCPM.
For example, if a publisher earns €500 from 200 000 impressions, the eCPM is €2.50. This metric helps publishers identify which placements and formats generate the most revenue and assists advertisers in evaluating cost efficiency across inventory sources.
In programmatic advertising, optimizing eCPM is essential for yield management. High eCPMs signal strong audience quality and ad relevance, while consistently low eCPMs may indicate issues with placement, targeting, or creative performance.
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