Some points on importance of CPA in marketing:
CPA is important in marketing because it defines the exact cost required to acquire a specific customer action such as a purchase or lead. Measuring CPA helps marketers compare campaign cost against revenue generated from each conversion, making it easier to identify profitable and loss-making campaigns. As a result, campaign decisions, budget allocation, and performance evaluation depend on CPA benchmarks, where lower acquisition cost with consistent conversions indicates better marketing efficiency.
Also find out related article on meaning of CPA in marketing to learn more about it.