Glossary
CPA
Both a payment model and a metric. As a model: the advertiser pays a fixed amount per action (sale, deposit, registration). As a metric: what an action cost you, CPA = spend / actions.
Also called: cost per action, cost per acquisition.
As a payment model, CPA is what most affiliate offers are: a fixed payout per approved action, defined in the offer. It is predictable for the affiliate and easy to compare across offers.
As a metric, CPA is your cost of getting one action from the traffic you bought. An iGaming campaign that spent $3,180 for 318 first deposits has a CPA of $10 per deposit. If the offer pays $40 per deposit, the campaign earns $30 on each.
Compare your CPA with the payout, minus the leads that will not be approved, and you know whether the campaign is worth scaling.