What Is Google Tag Manager? Google Tag Manager (GTM) is a free tool that enables you to install, store, and manage marketing tags without modifying website code. Marketing tags are small snippets of code that track user actions and collect data. The most common example of a marketing tag is the Google tag . The Google tag is used to install Google Analytics and other Google products and services. Other common examples include Google Analytics events, Google Ads conversion scripts, Meta Pixel, and remarketing tags. Tags like these are placed in your website code for Google Analytics and other platforms to function and collect data. But with every code change, you risk losing or breaking tags (or other website elements). GTM mitigates these issues by allowing you to install, manage, and deploy marketing tags from within its software instead of in your website code. And the software injects code snippets and marketing tags into your website code only when nec...