A CDE Definition
(Effective Cost Per Mille) A calculation that enables the revenue received from different Google AdSense "channels" to be compared to each other by deriving their CPM. For tracking purposes, channels can be assigned to the pages that host the ads or to the style of ads. The eCPM is the revenue received from one impression multiplied by 1,000 (see below). See CPM and Google AdSense.
eCPM = total $ / number of ads X 1,000
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