Google Tag Manager Server-side Tagging Tutorial 2026 || Server-side tracking with GTM

Ready to master Google Tag Manager server-side tagging? This complete 2025 tutorial provides a step-by-step guide to your first GTM server-side setup. Learn how to properly configure a server container, send data directly to Google Analytics 4, and make your tracking more accurate by mitigating the impact of ad blockers and ITP. What will you learn in this tutorial? How to create and host a server GTM container How to receive data to your server container How to send data from the server container to Google Analytics 4 How to make sure that everything is working properly How to map a custom domain (same-origin setup) This GTM server-side tracking tutorial is built for marketers and analysts who need more reliable data. By implementing an SGTM setup, you move tracking logic from the browser (pure client-side) to a mixed environment (browser + server). This not only can improve page load speed but also gives you full control over your data collection. We'll cover the full process of Google Tag Manager server-side tracking, from creating your tagging server to setting up a custom domain (same-origin) for maximum data integrity. === TIMESTAMPS === 00:00 - Intro 00:26 - How web GTM works 03:39 - Implementation 07:31 - Map a Custom Domain 16:37 - Client 18:59 - Update web GTM setup, send data to SGTM (GA4 events) 22:27 - Check the incoming request(s) 22:53 - Send data from SGTM 26:59 - Proxy SGTM and GA 32:15 - Publish the container 32:57 - Final Words === LINKS === Subscribe to our Youtube channel    / @analyticsmania   ⭐⭐ Google Tag Manager and Google Analytics 4 courses ⭐⭐ https://www.analyticsmania.com/course... 📕 Free e-books about Google Analytics and Google Tag Manager https://www.analyticsmania.com/google... ✭ How to use the Same Origin approach with different vendors https://stape.io/helpdesk/documentati... ✭ Cloudflare Worker code used in this video https://gist.github.com/ju1/9c2851f8a... === CONNECT WITH JULIUS & ANALYTICS MANIA === ✭ Facebook   / analyticsmania   ✭ Twitter   / fedorovicius   ✭ Linkedin   / fedorovicius   Subscribe to our Youtube channel    / @analyticsmania   #googleanalytics #googleanalytics4 #ga4 #googletagmanager