CPM (cost per thousand)

(The letter "M" in the abbreviation is the Roman numeral for one thousand). CPM is used by marketers to price advertising. A certain number of impressions is guaranteed, then set a rate based on that guarantee times the CPM rate. For example a web site that has a CPM rate of $25 and guarantees advertisers 600,000 impressions will charge $15,000 ($25 x 600) for those advertisers' ad banner.

CPM calculations do not apply to most field marketing campaigns.