Authored by a Performance Analytics Manager at a fintech affiliate programme in Tallinn, Estonia
For a decade, affiliate link tracking relied on 3rd-party cookies and blind faith. Now, with Safari's ITP, Firefox's ETP and Google's privacy sandbox rewriting the client-side layer, that approach effectively broke down.
What replaced it is server-side (S2S) infrastructure: a distinct click ID passed into the merchant's order flow, then returned through a postback endpoint the moment a conversion is registered. Zero cookies, no dependence on pixels, no hidden revenue loss.
Mature affiliate tracking software is far more than a redirect handler with a dashboard attached on top.