Google Tag Manager

A centralized tag management system that deploys marketing pixels and tracking scripts via a single container without manual code edits.

Google Tag Manager (GTM) eliminates the dependency on developer sprints by allowing marketers to manage JavaScript and HTML tags through a web-based interface. The platform uses a three-part logic: Tags (the tracking code), Triggers (the specific event like a button click or form submission), and Variables (dynamic values like transaction IDs). With built-in version control and a robust Preview Mode, teams can test configurations in a sandbox environment before pushing updates live to millions of users. It integrates natively with Google Analytics 4 and supports third-party vendors like Meta, LinkedIn, and Hotjar through custom templates.

https://tagmanager.google.com