What is Server-side tracking?

Server-side tracking is a measurement method in which visitor behavior data is sent first to the company's own server instead of going straight from the browser to analytics and ad platforms, and is then forwarded to those platforms under rules you define. It gives you more control over the data, reduces browser-related data loss and makes it easier to enforce consent rules in a single place.

Last updated: 20 October 2026View as Markdown

In short

Server-side tracking is set up to recover conversion data lost to ad blockers and browser restrictions. It usually runs on server-side Google Tag Manager hosted on the company's own domain, where data is processed, hashed if needed and forwarded to GA4, Google Ads or the Meta Conversions API. It does not override consent: data from users who have declined must not be sent from the server either. For example, an online store can send purchase data to both GA4 and Meta from one server container.

Key points

Data goes to the company's own server first, then on to analytics and ad platforms.
It is most often built with server-side Google Tag Manager.
It reduces data loss caused by ad blockers and browser restrictions.
It lets you control in one place which data reaches third parties.
It does not override consent; non-consenting users' data must not be sent.

How does it work?

A tag in the browser sends data to a server on the company's own domain (most often server-side Google Tag Manager). The server processes the data, strips or hashes personal data where needed, and forwards it to destinations such as GA4, Google Ads and the Meta Conversions API.

What it does and doesn't do

It reduces losses caused by ad blockers and browser restrictions, lets you control which data goes to third parties, and can help page speed by cutting the number of tags in the browser. It does not override user consent: data from a user who has not consented must not be sent from the server either.

Why it matters

Ad algorithms learn from conversion data; missing data means worse optimization. More detail: Server-side vs client-side tracking, setup: server-side tracking.

Last updated: 20 October 2026

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Server-side tracking

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