Julius Fedorovicius’s Analytics Mania tutorial explains the Optimized Tagging Experience in Google Tag Manager. It follows the migration workflow and shows how Google destinations and shared settings fit into a container.

Watch before changing a production setup: the walkthrough covers access permissions, which settings to inherit, and testing in Preview mode. The companion article provides screenshots and cautions against assuming a particular page-speed improvement without measuring your own site.

First contributor: Julius Fedorovicius. Original video published 13 October 2026 on Analytics Mania – Google Analytics & Tag Manager. Companion guide: https://www.analyticsmania.com/post/optimized-tagging-experience-in-gtm/

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