GTM acts as a central command center for all your tracking scripts and tracking tags. Instead of inserting codes manually on each web page, you implement GTM container code only once. From your GTM container, you are then in control. When your tracking needs change, you simply update the tags in the container, without the hassle of website updates.
At the core of GTM are tags, which represent specific tracking codes. Tags can communicate with platforms such as Google Analytics or Meta Business Manager, and you can place any HTML script in them. You control which interactions with your site trigger certain tags. GTM provides a user-friendly interface to implement these tags without in-depth coding knowledge; GTM is a no-code platform.
You have direction and control over your own tracking because you can set your own tags, and set when they are triggered. Tag activation is done by the triggers you set. Triggers set the conditions for tag execution, such as page loading or specific interactions.
In addition, GTM also provides a built-in debugging feature and preview mode to verify that the tags and triggers you set up actually work. You test how tags respond to different user actions before putting changes live. This way, you maintain control over the accuracy of your tracking.
Google Tag Manager puts you in the driver's seat of your digital tracking. With a single codebase, advanced tags and triggers, and a built-in control method, communication between your site and marketing and analytics platforms is streamlined.
Google Tag Manager is a tag management system that allows you to manage tags. Tags consist of tracking codes and code snippets that can load components on your site or are the guidelines for your tracking setup. With the help of Google Tag Manager, you never have to update these components in your site, but in GTM's user-friendly interface.
Google Tag Manager allows you to set up a server container. You can configure this server container with your own server to keep track of what's coming in to the server and what you want to happen the moment certain data comes in. So you have your tags on the server container triggered based on the data coming in to the server. Want to learn more about server-side tagging using Google Tag Manager?
Tags and triggers within Google Tag Manager can be set up by anyone, even if you have no coding experience. A tag answers the what question; what is being created or forwarded? A trigger answers the when question; when is the tag triggered? A trigger and tag work together and are also set up together.
There are three times when you use preview mode: after you've created new tags and triggers, to check that your current tags and triggers are still firing correctly, and to check that your tags and triggers are still working after you've made changes to your site. Want to know exactly how the GTM preview mode works? This article explains when and how to use the preview mode.