Server-side Google Tag Manager is essentially a server application (running on Node.js), which Google has helpfully composed into a Docker image. Docker, on the other hand, is an environment for creating, sharing, and running applications, right from the Docker platform itself. …
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On June 30, 2025, Google announced that they are consolidating how Google’s script libraries for the web (e.g. gtm.js and gtag.js) are loaded when using a server-side Google Tag Manager container. Before, you had the Web Container Client for loading the gtm.js file, and you …
This is a guest post by Jude Nwachukwu Onyejekwe. He is a prolific content creator, and he curates the DumbData portal, which is full of great, free resources for measurement enthusiasts. In this article, he shares some useful learnings for working with click identifiers. Click …
Google’s Consent Mode is a way to control how tags react to the user’s consent for different tracking purposes. It is specifically designed to work with Google’s tags, but especially through Google Tag Manager, you can use Consent Mode’s features and APIs …
Google Tag Manager users received an email on March 11th, where Google announced a very cryptic update to Google Tag Manager: As is typical with Google’s email communications, the email raised more questions than it answered. Even though I tackled the email in a LinkedIn …
One of the most popular use cases for server-side Google Tag Manager, often shared on this blog, too, is to split an incoming stream into multiple different endpoints. Since the demise of customTask for Universal Analytics (Rest In Peace!), there hasn’t really been a solid, …
There are many reasons why you might want to duplicate your tags (or triggers, or variables, or templates) in Google Tag Manager. One prime example is server-side tagging, where it’s sensible to first build and validate your tracking setup before migrating fully to a …
