Cost per Mille (CPM)

CPM, or cost per thousand impressions, is a bidding structure where the advertiser pays a maximum bid amount for a thousand impressions received.

Definition

CPM is a bidding structure where the advertiser pays a maximum bid amount for a thousand impressions received. CPM is often used for banner type (Display Network) advertisements where you are charged per impressions, as opposed to the Search Network, where you are charged per click.