Google Tag Manager (GTM) is a free tool offered by Google. It allows you to quickly and easily add tracking and marketing tags to your website. These tags can include things such as Google Analytics, AdWords conversion tracking, and even custom scripts that you may want to run on your website.
The Key Components of GTM:
Tags: Tags are snippets of code responsible for collecting specific data about user interactions with your website, such as page views, form submissions, and clicks. Common tags include Google Analytics, Google Ads Conversion Tracking, and Facebook Pixel.
Triggers: Triggers are events that prompt tags to fire. For instance, you can set up a trigger to fire a tag when a user lands on a particular page or submits a contact form.
Variables: Variables store information that tags and triggers use to determine when and where they should execute. GTM provides both predefined and user-defined variables.