S2S Postback (Server-to-Server Tracking)
A cookieless, secure attribution method where conversion data is communicated directly between advertiser servers and affiliate tracking platforms via API callbacks.
Formula / Calculation / Syntax
Server-to-Server (S2S) Postback URL tracking is the industry standard for 100% privacy-compliant, cookieless performance attribution. When a user clicks a campaign link, a unique click ID (transaction ID) is generated and stored. Upon conversion, the advertiser's backend server triggers a webhook/HTTP request back to the network server containing the original click ID.
S2S postbacks bypass browser cookie blockers, Safari ITP, and ad-blocking extensions completely, ensuring 100% attribution accuracy.
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