CPM (Cost Per Mille) marketing is an advertising model where advertisers pay a set fee for every 1,000 impressions of their ad. It’s commonly used in display and video advertising, allowing brands to reach a large audience efficiently. Advertisers focus on brand awareness and visibility, as costs are determined by the number of times an ad is shown, regardless of clicks or conversions. This model is ideal for campaigns aimed at maximizing exposure rather than direct response.