GA4 & Google Tag Manager: how do you get them to talk to each other?

In a digital world where every bit of data counts, understanding how to connect Google Analytics 4 (GA4) and Google Tag Manager (GTM) can be a real asset to your business.

Are you a marketing manager, SME executive or communications manager? Good news: let's find out together how you can take advantage of two digital marketing essentials to better manage your online visibility.

By mastering this synergy, you'll be able to make more informed decisions and increase the effectiveness of your actions.What are GA4 and Google Tag Manager good for? Before we think about connecting them, let's take a look at their usefulness.

Google Analytics 4 (GA4) is the essential measurement tool for finding out where your visitors are coming from, what they're doing on your site and how to optimize their journey.

It allows you to track your traffic metrics: session origin, conversion rate, time spent on your pages, etc.

Thanks to its dashboard, it sheds light on the performance of your digital ecosystem.

Whether you have a small shop window or a substantial e-commerce site, it can be adapted to your tracking and analysis needs.

Google Tag Manager (GTM) acts as a toolbox for deploying tags on your site.

These are used to track specific actions: clicks on a button, document downloads, form submissions... All without touching the site code (or almost), making your actions agile and secure.

GTM makes it easy to set up customized follow-up without slowing down your technical teams.

In short, GA4 collects the data, and GTM installs the sensors to collect it accurately.

Their complementarity guarantees a complete and precise vision of your digital business.

Why connect Google Analytics 4 and Tag Manager? Automate data collection

Rather than asking your developer to add a new line of code each time, you simply configure a new tag in GTM, and presto! The tracking of your conversions, events or page views is sent to GA4 automatically.

This automation frees up time to focus on strategy rather than technique.

Greater precision and flexibilityWith Google Tag Manager, you can define events exactly the way you want them.

For example, every time a user watches a video, fills in a form or clicks on a key button, GTM sends this information to GA4.

This gives you fine, relevant metrics, so you can fine-tune your digital strategy more quickly.

The more precise your events, the more effective your optimizations, which translates into better results.

Centralize and simplify managementNo need to multiply platforms and complicated configurations.

A single area (GTM) to manage all your tags, and a single area (GA4) to consult and analyze the data.

It saves you time, reliability and peace of mind, so you can effectively manage your digital marketing.

This gives you total control over your entire ecosystem, without spreading yourself too thin.

How to set up the dialogue between GA4 and GTM?1

Install Google Tag Manager on your siteFirst and foremost, you need to have GTM installed on every page of your website.

Usually, your technical team adds a small script provided by Google.

Once in place, everything becomes simpler.

Without this initial step, no configuration will work properly.2.

Create a Google Analytics 4 tag in GTMD In the Google Tag Manager space, create a new tag of type "GA4 Configuration".

All you need is the measurement code (G-XXXXXXXX) for your GA4 property.

Link the tag to all the pages of the site or to what you wish to track.

With just a few clicks, your data begins to flow reliably into GA4.3.

Define customized eventsTo track specific actions (clicks, form submissions), create event tags in GTM and detail the parameters to be sent to GA4.

The platform lets you define without coding what you want to upload as data.

You can then track the behaviors that really matter to your business and better understand your visitors.4.

Test before deployingUse GTM's preview tool to check that everything's working: the tag and events are triggered, and the data arrives in GA4.

This avoids unpleasant surprises and guarantees the quality of your reports.

Taking the time to test means ensuring the reliability of your future analyses.

Practical tips for efficient useDocument your tags and trigger rules for easy reference.

Clear documentation simplifies future monitoring.

Clearly name your tags and events: this will facilitate tracking in GA4.

Self-explanatory names make it easy for your whole team to find their way around, even months later.

Test your configurations regularly, especially after modifying your site.

This ensures that all useful data arrives correctly, without bugs or duplicates.

Centralize the management of your tags and carefully analyze the reports to identify areas for rapid improvement.

Organized management speeds up the detection of opportunities or problems on your site.

Simplify your digital managementSetting up a dialogue between GA4 and Google Tag Manager gives you better visibility of your site's real activity, without complicating its management.

To take things a step further, GreenRed offers a complete solution for centralizing, understanding and making the most of your traffic, SEO, SEA, social networking and AI visibility, without multiplying the tools you need to analyze.

Find out how GreenRed can help you save time and improve performance.

Adopting this duo of tools will lay a solid foundation for your digital growth, and enable you to face every new development on the web with confidence.