Server-side tracking.

02 · THE BRIEFING

1. I
   When to consider it
   Your ROAS collapses while your CPC stays stable. That's often the moment. Adblock, Consent Mode V2 and iOS 18 chip away 25 to 40 % of browser-side signal on the Belgian market in 2026.
2. II
   Why it matters
   Without server-side, you run your ad budgets on truncated data. You over-invest in channels that do not really convert, under-invest in those that do. The opportunity cost is invisible but very real.
3. III
   What you get back
   The conversion signal blocked browser-side. Clean cross-channel attribution. Data that holds up over time, despite the upcoming GDPR, iOS and Chrome tightening.
4. IV
   How we run it
   We start by looking at what bleeds, before we touch any code. TAGGRS or GTM Server-Side container depending on your stack. Deployed alongside your site, never replacing it. Clean handover to your team or existing agency.
5. V
   What it unlocks
   AI automation and ML running on reliable data. Full ownership if you change providers. Budget arbitrages based on real numbers, not estimates.

We get back to you within the week · scoping before any quote.

04 · WHAT WE WON'T WRITE IN AN RFP

Server-side tracking is a marketing decision tool. Not an IT project.

Server-side is only useful if you actually steer your ad arbitrage with it. Otherwise, you pay full price for half the benefit. The right question before signing the quote: who on your team will read the recovered data (via dedicated dashboards or internal tools) and turn it into budget decisions? If the answer is fuzzy, the right order is data governance first, then the server.

• 01

  Recovered lost signal

  Your conversion events come back even when the browser blocks them. Adblock, Safari ITP, iOS 18, strict Consent Mode V2. The server receives, forwards, stores.

• 02

  Clean multi-channel attribution

  You finally see which channel actually drives the final conversion. No more Meta + Google double-counting. No more blind arbitrage between Search, Social and Display.

• 03

  Data ready for AI automation

  Once the server layer is in place, your data is structured and reliable. You can plug in automated budget optimization rules, lead scoring, product personalization.

• 04

  Full data ownership

  You remove third-party scripts from your site. You regain ownership of the tracking layer. If you change agency tomorrow, the mechanic stays with you, documented.

05 · THE PLAY-BY-PLAY

Four steps. Five weeks on average. Zero production freeze.

1. 01

   We look at what bleeds.

   Audit of the existing DataLayer + comparison GA4 vs Meta vs ad platforms. We measure the real gap between what fires site-side and what lands ad-side. Tools: TAGGRS (opens in a new window) Diagnostics, GA4 (opens in a new window) BigQuery export, Meta Events Manager Test Events.

2. 02

   We decide what we touch, what we leave.

   Target tagging plan, scope frozen in writing, client sign-off before any line of code. If some platforms are not worth the server-side move (low conversion volume), we say so. No silent scope creep.

3. 03

   We deploy the code alongside your site.

   Container TAGGRS (opens in a new window) Cloud Run or GTM Server-Side (opens in a new window) containerised depending on volume. Meta Conversion API + Google Enhanced Conversions wired up. Front-side, just a Custom HTML tag replaces third-party pixels. No production freeze.

4. 04

   We compare 14 days before vs after.

   A/B measurement on the same events, same attribution window. Looker Studio (opens in a new window) dashboard wired directly to GA4 + BigQuery (opens in a new window). Notion handover to your team or your media agency. Full ownership.

07 · NOT YET FOR YOU IF

Three cases where server-side tracking is not the top priority.

• You refuse to touch the existing CMP.

  A clean server-side requires a clean Consent Mode V2. If the CMP is untouchable, we lose 60% of the benefit and cannot guarantee compliance.

• Your annual ad spend is under 50 k€.

  The entry cost of a server-side setup is not paid back below this threshold. At these volumes, the ratio of data recovered to dev effort becomes debatable. We would rather say it than walk you into the dark.

• You want to tick the Meta box without steering with it.

  No one on your side will read the recovered data to reallocate budgets. The cost of a server-side setup is not paid back by ticking a box.

We look at your setup. We tell you what your marketing tools no longer see.