In CPM, what does the "M" denote?

In CPM, which refers to Cost Per Mille (or Cost Per Thousand), the "M" denotes "thousand" and is derived from the Latin word "mille," which means thousand. This term is widely used in advertising to quantify the cost of reaching one thousand impressions or views of an advertisement.

Understanding this terminology is crucial in advertising and marketing because it allows businesses to evaluate the cost-effectiveness of their advertising efforts relative to the number of people who actually see their ad. Therefore, the emphasis on "thousand" highlights the standard metric used in measuring ad reach, making CPM a key performance indicator in the analysis of advertising campaigns.