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On-Premises Solutions

GTM & GA4 Management Application

A self-hosted web app that wraps the GTM and GA4 APIs so your team can manage multiple containers and properties without touching the native UIs. Everything runs on your own servers, zero third-party dependency, full control.

On-Prem GTM GA4

A self-hosted web application wrapping the GTM and GA4 APIs for your team's specific workflows, running entirely on your infrastructure with no third-party dependency.

Best for

Agencies or large enterprises managing multiple GTM containers and GA4 properties who need bulk operations, cross-account reporting, or automation the native UIs don't support.

  • 60-160 hours, server infrastructure required
  • Single organisation or agency scope
  • Authenticated via Google OAuth, deployed to your servers
  • Full source code delivered, owned entirely by you

Overview

How to know if you need a GTM & GA4 Management Application

  • You manage dozens or hundreds of GTM containers or GA4 properties and bulk operations are not possible in the native UIs.
  • Cross-account tag auditing or reporting requires exporting data to spreadsheets because no native tool spans multiple accounts.
  • Repetitive operations — pushing the same tag to 50 containers, auditing naming conventions across all properties — consume significant team time every week.
  • You want an audit log of changes across all accounts in one place, not scattered across individual GTM container histories.
  • You need automation or custom reporting that the GTM and GA4 native interfaces cannot support.

What the GTM & GA4 Management Application covers

  • Workflow audit to document every manual operation your team repeats across accounts, with the API operations needed to automate each.
  • Application architecture agreed: tech stack, authentication model, data layer, and UI component structure.
  • Self-hosted web application built against GTM and GA4 APIs for your team's specific operational requirements.
  • Google OAuth authentication so team members log in with their existing Google accounts.
  • Deployed to your infrastructure with full source code and a tested deployment process.

GTM & GA4 Management Application outcomes

  • A tool that eliminates the manual work your team repeats across accounts every week, owned entirely by you.
  • No ongoing vendor dependency: the application runs on your servers and you own the source code.
  • Documentation covering deployment, maintenance, and how to extend the application as your needs change.

GTM & GA4 Management Application scope and hours

  • 60-160 hours depending on the features scoped in the initial version.
  • Server infrastructure capable of running the application is required. We advise on requirements at scoping.
  • Development is structured in agreed sprints with review sessions at each milestone.
  • The initial scope covers your highest-priority workflows. Additional features are scoped as separate engagements.

What makes our GTM & GA4 Management Application different

  • We start with a workflow audit, not a features list. We build what your team actually needs to automate, not a generic dashboard.
  • The application runs on your infrastructure with no third-party dependency. There is no SaaS subscription, no data leaving your environment.
  • Development is iterative with sprint reviews, so the scope can be adjusted as real usage patterns emerge during build.
  • You own the source code entirely. The application can be maintained and extended by your own development team after handover.
FREE AUDITS

Want to try before you commit?

  • Looking to try out Beluacode but not sure about it? You can always ask us for a free audit.
  • Free, no strings attached. We deliver the results and wish you a great day.
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Free

Free Generic Tracking

A high-level review of your overall tracking setup: event coverage, obvious configuration errors, attribution quality, and the highest-impact quick wins across your analytics and ad platforms.

Tracking Setup Quick Wins Analytics Ad Platforms
Free

Free GTM Container

A surface-level review of your Google Tag Manager container: tag count, obvious duplicates, missing consent triggers, broken references, and the highest-impact issues. Delivered as a written summary.

GTM Tag Inventory Consent Triggers Duplicates
Free

Free Consent Mode

A basic review of your Google Consent Mode v2 implementation: whether it is configured, which mode is active (Basic or Advanced), and whether consent states appear to be respected by your key tags.

Consent Mode v2 CMP GDPR Tag Firing
Free

Free Website Performance

A Lighthouse-based snapshot of your Core Web Vitals on key page templates, with a basic assessment of how your tag stack is affecting page speed. Delivered as a written summary with the top tag-related performance issues identified.

Core Web Vitals Lighthouse Tag Load Impact Page Speed
Free

Free GA4 Analytics

A spot-check of your GA4 property: event volume, obvious tracking gaps, and a comparison of your reported conversion numbers against expected behaviour. Delivered as a written summary with the top issues identified.

GA4 Event Coverage Conversion Gaps Data Quality
Our approach

How we deliver GTM & GA4 Management Application.

A structured process built around your stack, your team, and your data.

01

Workflow audit and requirements

We document every manual operation your team repeats across accounts: what you do, how often, and the exact API operations needed to automate it.

02

Architecture design

The application architecture is agreed: tech stack, authentication model, data layer, and UI component structure, with a scoped feature list for the initial version.

03

Development

The application is built in agreed sprints with review sessions at each milestone, so the scope can be refined as real usage patterns emerge.

04

Deployment

The application is deployed to your infrastructure with full environment documentation and a tested deployment process.

05

Handover and documentation

Source code, deployment documentation, and a technical handover session ensure your team can maintain and extend the application independently.

Frequently Asked Questions

What GTM and GA4 operations can be automated via the APIs?
Most operations available in the native UIs are exposed through the APIs: reading and writing container configurations, creating and updating tags, triggers and variables, managing GA4 property settings, pulling reporting data, and managing user access. We confirm specific API coverage for your required workflows at scoping.
What server infrastructure is needed?
The application needs a server environment capable of running a web application and making outbound API calls to Google. The specific requirements depend on the tech stack agreed at scoping. We advise on minimum viable infrastructure before development starts.
How does Google OAuth authentication work?
Team members log in with their existing Google accounts. The application requests the API scopes needed for GTM and GA4 access. Users only see and can operate on accounts their Google account already has access to.
Can the application be used by multiple team members simultaneously?
Yes. Multi-user access is part of the standard architecture, with each user authenticated via their own Google account.
What happens if we need new features after handover?
You own the source code and can have your own development team extend it. Alternatively, we can scope additional features as a separate engagement.

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