Learn · How-To

How to Set Up Server-Side Tracking for Accurate Ad Attribution

Browser-based, client-side tracking alone increasingly under-reports real conversions due to ad blockers, cookie restrictions and browser privacy changes. Server-side tracking moves the data collection point onto your own server infrastructure, restoring accuracy across ad platforms — not just one specific network's API.

1. 1

   Audit your current tracking setup

   Identify every conversion event you currently track client-side and how much you estimate is being lost to blocking or privacy restrictions, using platform discrepancy reports as a rough guide.

2. 2

   Choose your server-side container approach

   A server-side Google Tag Manager container is the most common path, running on a dedicated subdomain you control rather than relying solely on the browser.

3. 3

   Set up your server-side container infrastructure

   This typically requires a small always-on server or managed hosting (e.g. via Google Cloud Run) to run the container.

4. 4

   Configure a first-party tracking subdomain

   Routing tracking requests through your own domain, rather than a third-party one, reduces the chance of the requests being blocked by browser privacy features.

5. 5

   Map your client-side tags to equivalent server-side tags

   Recreate your key conversion events — leads, purchases, sign-ups — as server-side tags, sending the same underlying data through the new pipeline.

6. 6

   Implement deduplication between client and server events

   Use a shared event ID between client and server-side events so platforms don't double-count the same conversion.

7. 7

   Test thoroughly before fully cutting over

   Run client-side and server-side tracking in parallel, comparing event counts, before relying solely on the server-side pipeline for reporting and optimisation.

8. 8

   Monitor server costs and uptime as an ongoing operational concern

   Unlike client-side tags, a server-side container is infrastructure you're now responsible for keeping running.