CPC, CPM, CPA, and CPL are the basic models for billing and measuring the effectiveness of paid advertising: CPC (cost per click), CPM (cost per thousand impressions), CPA (cost per specific action, such as a conversion), and CPL (cost per lead). The choice of a specific metric and model depends primarily on the campaign’s objective—ranging from building brand awareness to direct, measurable conversions.
CPC / CPM / CPA / CPL
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