How are affiliate programs technically implemented?

Question

API

Tell me how affiliate programs are implemented?
That is, through json, soap - how are they made, where to dig?

Answer 1

1. Tracks transitions to us via a special link or by showing a pixel, for example.
2. We mark such users as coming from a partner.
3. We believe that the partner is due.
Language and protocols can be any.

Answer 2

The base of any affiliate program, as Oleg said :
For an example, you can look at free plugins for WordPress, say Affiliate Manager .