Conversion is any targeted action which the user should perform on the offer page. For affiliate marketers, the conversion is the thing the advertiser pays a fee for.
There are different types of targeted actions:
- following the link;
- filling the form;
- adding goods to the shopping cart;
- email subscription;
- download of the program;
- filling the profile after registration, etc.
The offer can consist of a few targeted actions which an advertiser pays for. The more difficult the action, the more expensive it will be evaluated. For example, registration is a simple action for a low price, but an order is a complicated one and the payout will be higher.
Conversion is the last action, anyway. If the user finishes with the registration, it will be counted as a conversion. If he buys something, the payout will be for the purchase.