CPA marketing stands for "Cost Per Action" marketing. It is a type of affiliate marketing where advertisers pay affiliates (publishers or marketers) for each specific action that a potential customer takes, such as completing a form, making a purchase, or signing up for a free trial.

CPA marketing differs from traditional affiliate marketing where the affiliate is paid a commission for every sale made through their referral link. Instead, CPA marketing pays affiliates for specific actions taken by the referred customer, regardless of whether or not they make a purchase.

CPA marketing offers several benefits to both advertisers and affiliates. Advertisers benefit from a lower risk of advertising spend, as they only pay for the desired action, while affiliates benefit from higher commissions for each action, potentially leading to higher earnings. CPA marketing is popular in the online advertising industry and is often used in conjunction with other forms of digital marketing campaigns.