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Understanding the Differences Between Google Tag Manager (GTM) and Google Analytics 4 (GA4)
Understanding the Differences Between Google Tag Manager (GTM) and Google Analytics 4 (GA4)
Erika Gardner avatar
Written by Erika Gardner
Updated over 2 weeks ago

If you're trying to track website activity, you might have heard of Google Tag Manager (GTM) and Google Analytics 4 (GA4). While they both help with tracking, they serve different purposes.

What is Google Tag Manager (GTM)?

GTM is a tag management system that makes it easier to add and manage different tracking codes on your website. Instead of manually editing your website’s code every time you want to track something, GTM lets you do it through its user-friendly interface.

Here’s what GTM can do:

  • Manage multiple tracking codes in one place – You can use GTM to add and control scripts for Google Analytics, Facebook Pixel, Google Ads, and more.

  • Customize what gets tracked – GTM allows you to create specific rules (called triggers and variables) to control when and how data is collected.

  • Keep your website’s code clean – Instead of adding tracking scripts directly to your website, you just need to install the GTM container once. After that, all changes can be made through GTM.

  • Work with multiple platforms – GTM is not just for Google Analytics; you can use it to manage tags for other tools as well.

  • Test before publishing – GTM has a built-in preview and debug mode, so you can check if your tags are working correctly before making them live.

  • Focuses on tag management – GTM is all about handling tracking scripts and making sure they work as expected.

In short, GTM helps you manage tracking codes more easily, making it a flexible tool for website owners and marketers.

What is Google Analytics 4 (GA4)?

GA4 is a web and app analytics tool that helps you track and measure user interactions on your website or app.

Here's what GA4 can do:

  • Tracks user behavior – GA4 collects data on user activity, including sessions, events, and conversions.

  • Limited customization – Events are pre-set, meaning you can’t change what data is collected without additional setup.

  • Requires installation – You need to add the GA4 tracking script to your website or use GTM to deploy it.

  • Only works with Google Analytics – Unlike GTM, GA4 doesn’t support tracking for other platforms like Facebook or Google Ads.

  • Limited debugging tools – While GA4 has some debugging features, they are not as advanced as GTM’s.

  • Focuses on analytics – GA4 provides reports, dashboards, and insights to help you understand your website’s performance.


Key Takeaways

  • GTM helps manage different tracking codes, while GA4 is specifically for analyzing website and app data.

  • GTM gives you more control over what data you collect, while GA4 has pre-set tracking options.

  • GTM supports multiple platforms, but GA4 only works with Google Analytics data.

If you need a flexible way to manage different tracking codes at your practice, GTM is the better choice. If you just want to analyze website traffic and user behavior, GA4 is the right tool for the job.

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