A CPA network is a conduit between an advertiser and publisher — typically a company whose main purpose is to vet qualified publishers and help advertisers find offers from publishers that are most likely to generate leads.

CPA in digital marketing is an acronym for cost per acquisition or action. This cost refers to a business's ability to convert ads. More specifically, it's a fee a company pays whenever an ad results in a sale. In the case of cost per action, the company pays a fee when the ad results in an action taken by a customer.

CPA (cost per action) is a mobile marketing model where the advertiser pays the media source a set fee every time a user completes a particular action after engaging with an ad. It's calculated by dividing ad spend by the number of completed actions.