CPA

Cost Per Action (CPA): In the context of online advertising and marketing, CPA refers to a pricing model where advertisers pay a fee based on a specific action taken by the audience. This action could be a click, form submission, sale, or another predefined conversion event. Advertisers pay only when the desired action occurs, making it a performance-based advertising model.

Expert Tip:

"In 2026, the success of a CPA campaign depends on your 'Conversion Postback' speed. To help AI bidding algorithms optimize your results faster, ensure your site triggers an immediate signal back to the ad platform the second an action occurs; delayed data results in higher acquisition costs and missed opportunities in high-velocity auctions."