CPA - Cost per action (in affiliate marketing) CPA Marketing is performance based and is normal in the affiliate marketing industry of the business enterprise. Inside this payment strategy, the Publisher takes all of the danger of running the advertisement, and the Advertiser pays just for the number of users that complete a trade, like a buy or sign-up. This is the ideal sort of rate to cover banner ads and the worst kind of speed to charge. Yoonla is an example of CPA offer.