Cost-Per-Acquisition (CPA) is an #advertising-model in which advertisers pay only when a predetermined action—such as a sale, lead, or sign-up—is completed by a user. This approach aligns advertising spend directly with measurable business outcomes, making it a preferred model for performance-driven campaigns. CPA is commonly used in affiliate marketing, e-commerce, and lead generation, allowing advertisers to manage risk by tying costs to actual conversions. It is frequently contrasted with impression-based models like @Cost-Per-Impression (CPM) and click-based models such as @Pay-Per-Click (PPC) to evaluate the efficiency of advertising strategies.Subjective

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