Cost Per Mille
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CPM stands for Cost Per Mille or cost ‰. In Latin mille means thousand, therefore, CPM means cost per thousand. CPM is a commonly used measurement in advertising. Radio, television, newspaper, magazine and online advertising can pe purchased on the basis of what it costs to show the ad to one thousand viewers (CPM).
For example, in online advertising, if a website sells banner ads for a $20 CPM, that means it costs $20 to show the banner on 1000 page views.