First-party tag delivery
Classic sGTM moves event delivery server-side, but the tag script still loads from googletagmanager.com, a third-party request blocked before any event exists. Tag Gateway serves the tag from your domain.
IMPLEMENTATION SERVICE
Google Tag Gateway, implemented end to end.
Datahash deploys Google Tag Gateway so your Google tags load from your own domain, first-party. Measurement that browsers and ad blockers were stripping comes back. Live in 1-2 weeks from IT approval.
Where the Google tag loads from, before and after.
The tag moves from googletagmanager.com to your own domain, so blockers that strip third-party scripts stop eating Google Ads and GA4 measurement.
Illustrative. Requests move to a same-origin path on your domain.
Every blocked tag is a bid its models make blind.
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Third-party scripts are the first thing content blockers remove. Every blocked tag is a conversion Google never sees and a bid its models make blind.
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Google reports an average 14% increase in measured conversions for advertisers using Google Tag Gateway. That is Google's published figure, measured across advertisers who adopted it.
What Tag Gateway does that server-side tagging alone does not.
Same-origin serving, not a tracking subdomain
Browsers increasingly treat tracking subdomains like CNAME cloaking: capped cookie lifetimes, blocklist fingerprinting, CORS friction. The recommended same-origin path (yourdomain.com/metrics) is not separable from the site, and enables longer-lived server-managed cookies in same-origin sGTM deployments.
Deployment without re-tagging
Integrated CDN enablement is a few clicks with no code changes; manual CDN and sGTM routes exist for other stacks.
Confidential computing by default
Tag data is encrypted in the browser and processed in a Trusted Execution Environment; advertisers can verify handling through attestation. IP redaction before data reaches Google is available.
What it does not do
Google-only; no payload transformation, no event logic, no non-Google destinations. Meta, TikTok, and Snap delivery, enrichment, and consent-gated routing remain server-side tagging and CAPI jobs.
Tag Gateway and server-side GTM solve different problems.
| Google Tag Gateway | Server-side GTM | |
|---|---|---|
| Main purpose | First-party loading of Google tags | Process and route events via a server you control |
| Layer | Network / proxy | Data processing |
| Handles event logic | No | Yes |
| Modifies data and parameters | No | Yes |
| Non-Google platforms | No | Yes |
Complements, not competitors. The ideal setup runs both. Hosted sGTM providers such as Stape, Addingwell, or Taggrs run the container layer, not the tag serving layer; Datahash implements Tag Gateway on whichever infrastructure you already have.
Discover, scope, implement, hand over.
1-2 weeks from IT approval.
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Discover
Current stack mapped (CDN, load balancer, sGTM, tags, consent).
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Scope
Deployment mode picked (one-click CDN, manual CDN, or sGTM; same-origin versus subdomain), IT and legal questions answered from Google's data processing documentation. The scoping output includes a written gateway-versus-direct decision record with reasons; not every stack should run a gateway.
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Implement
Step-by-step plan executed with your dev team, tagging gaps caught before go-live.
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Verify and handover
Serving confirmed in diagnostics before anything is called live; recovery measured against the pre-cutover baseline; handover names an owner and a kill switch (who can stop it, how, and where that is written); 3-month stability window. Optional: tracking health monitoring keeps watching after we leave.
IN ONE SENTENCE
Google Tag Gateway is a Google feature that serves the Google tag and its measurement requests from the advertiser's own domain instead of googletagmanager.com, so browser policies and ad blockers that restrict third-party scripts no longer strip Google Ads and GA4 measurement.
Adjacent moves on the same stack.
Implementation services
All nineteen builds.
Learn moreWeb server-side CAPI
First-party delivery for Meta, TikTok, and Snap.
Learn moreGoogle Web CAPI offering
The product this service builds on.
Learn moreTag Gateway offering playbook
The offering behind this service.
Learn moreData Strength
Where Datahash sits among Google's Data Strength partners.
Learn moreQuestions your team will ask.
Is Google Tag Gateway the same as server-side tagging?
No. Tag Gateway changes where the Google tag is served from, first-party at the network layer. Server-side tagging processes events on a server you control and routes them to any platform. Different problems, commonly deployed together.
Do we need sGTM to use it?
No. On an integrated CDN, Tag Gateway enables in a few clicks with no re-tagging. If you already run sGTM, we enable it there, same-origin where possible.
Does it bypass consent choices?
No. Consent Mode continues to govern tag behavior. Basic Consent Mode setups on one-click CDN should add Google's Data Transmission Controls; Advanced Consent Mode needs no extra configuration.
We already use Stape, or Addingwell, or Taggrs. Is it redundant?
No. Those host your sGTM container; Tag Gateway governs how the Google tag reaches the browser, and works alongside a hosted container.
What does it cost?
Tag Gateway is a free Google feature; the only costs are your existing CDN or sGTM infrastructure. Conversion uplift does not increase CDN cost.
Does it help Meta or TikTok tracking?
Not directly; it serves Google tags only. For the same first-party benefit elsewhere, see Web server-side CAPI.
NEXT STEP
Book a Tag Gateway working session.
Scoped with a consultant, not a sales script. We map your stack, name the dependencies, and give you the plan whether or not you run it with us.