Acronym for Effective Cost Per Thousand a hybrid Cost-Per-Click (CPC) auction calculated by multiplying the CPC times the click-through rate (CTR) and multiplying that by one thousand. (Represented by: (CPC x CTR) x 1000 = eCPM.) This monetization model is used by Google to rank site-targeted CPM ads (in the Google content network) against keyword-targeted CPC ads (Google AdWords PPC) in their hybrid auction.
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