Definition of CPA in marketing:
CPA (Cost Per Acquisition) in marketing is the amount an advertiser pays to acquire a specific customer action, such as a purchase, sign-up, or lead, through a marketing campaign. It refers to the defined cost assigned to each completed conversion and represents the target outcome marketers measure to evaluate campaign performance and efficiency. In a marketing funnel, CPA exists as the final cost tied to successful user action after engagement and interaction occur. The term CPA applies only to the cost of acquiring the desired action and does not include impressions, clicks, or intermediate engagement metrics used during the campaign.