Server-side tracking explained: how to maintain control of your data in 2026

If you haven't been living under a rock for the past two years, you've noticed: third-party cookies are disappearing, browser tracking is becoming increasingly restricted, and privacy legislation is getting stricter. For e-commerce brands that depend on data for their marketing, this is a serious challenge. The solution? Server-side tracking.

What is server-side tracking?

With traditional client-side tracking, you place a piece of JavaScript code (a pixel) on your website. That code runs in the visitor's browser and sends data to platforms like Meta, Google, and TikTok. The problem: browsers are increasingly blocking these tracking scripts. Safari has been doing it for years via Intelligent Tracking Prevention (ITP), and Chrome is following with similar measures.

With server-side tracking, you move the tracking from the browser to your own server. Instead of the visitor's browser sending data to Meta, your server does it. The data goes from your website to your server, and from your server to the advertising platforms' APIs. Think of the Meta Conversions API, Google Measurement Protocol, or the TikTok Events API.

Why it makes a difference

The impact of server-side tracking is concretely measurable. With our clients, we see an average of 25-35% more registered conversions after implementation. These aren't fictitious conversions — they're actual purchases that previously went untracked because the browser blocked the script.

More registered conversions means better data. Better data means Meta's or Google's algorithm can optimize more effectively. Better-optimizing campaigns means lower cost per conversion. It's a flywheel that starts with tracking.

How we implement it

At Wrkt, we use Google Tag Manager Server-Side (sGTM) as the foundation. We set up an sGTM container in Google Cloud, configure the relevant tags (Meta CAPI, Google Ads, TikTok Events API), and connect them to your webshop via a first-party domain.

That last part is important: by routing your tracking through a subdomain of your own website (e.g., track.yourwebshop.com), the data is treated as first-party data. This bypasses browsers' restrictions on third-party cookies.

The technical implementation takes an average of two to three weeks, depending on your platform (Shopify, WooCommerce, custom) and the number of channels you want to connect.

The role of consent management

Server-side tracking is not a way to circumvent privacy legislation. You still need explicit consent from your visitors to track their behavior. What server-side tracking does is ensure that the data from visitors who do give consent actually reaches the advertising platforms.

We advise all our clients to use a consent management platform (CMP) that works well with server-side tracking. Cookiebot and Complianz are two options we regularly implement in combination with sGTM.

Enhanced conversions and advanced matching

In addition to server-side tracking, setting up enhanced conversions (Google) and advanced matching (Meta) is essential. This involves sending hashed customer data, such as email addresses and phone numbers, along with your conversion events. The platforms use this data to match conversions to ad interactions, even when the cookie is no longer available.

Combined with server-side tracking, this provides an attribution level that comes close to reality — something that's no longer possible with client-side tracking alone.

Conclusion

Server-side tracking is no longer a luxury — it's a necessity. Every e-commerce brand that's serious about growth should implement it. The investment is limited (think a few hundred euros per month for hosting), but the impact on your campaign performance is enormous.

Want to know how your tracking setup looks? Our free Growth Check analyzes your pixel setup, server-side events, and conversion tracking, among other things.