Cost Per Mille (CPM) marketing is a digital advertising model that enables businesses to pay for every 1,000 impressions of these ad. The term "mille" is derived from the Latin word for "thousand," and CPM is traditionally used in online advertising to measure ad effectiveness and budget expenditures. https://squareblogs.net/fowlpoppy8/cpm-marketing-understanding-cost-per-mille-advertising