Google Tag Manager (GTM) is a tag management system that lets you deploy and update tracking tags, such as GA4, Bloomreach, and ad pixels, through a web interface instead of editing site code for each change.
Category
Tracking
Also known as
GTM; tag manager
It centralizes tags and speeds up changes, but it also adds timing and load-order risks that can break things: a tag may fire too late, fire twice, or fire before consent resolves. On modern sites, core tracking is often loaded outside GTM for exactly this reason.
In practice
Use GTM for tags that genuinely benefit from marketer self-service, and load timing-critical or consent-critical scripts directly. The convenience is real, but so is the debugging cost when order matters.
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