GTM custom templates gained readAnalyticsStorage API to read GA client and session cookie IDs

Date

Aug 1, 2025

Regions

Global

Primary source

Tag Manager Help

Sources

• open_in_new
  Release notes - Tag Manager HelpTag Manager Help · Aug 1, 2025
• open_in_new
  Custom template APIsGoogle for Developers · Aug 1, 2025

Related changes

• Nov 10, 2025Server-side Tag Manager image 4.0.0 upgraded runtime to Node.js 24
• Sep 30, 2025GTM now displays the active status of a Google tag gateway setup regardless of configuration method
• Jul 28, 2025Floodlight tags in server-side Tag Manager began sending unconsented requests server-to-server
• Jun 30, 2025sGTM web container client now serves all Google scripts; GA client dropped dependency serving
• Jun 24, 2025Google tag gateway pause and delete merged; Cloudflare setups can now be rolled back
• May 15, 2025Server-side Tag Manager image 3.0.0 upgraded runtime to Node.js 22

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