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. …
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 …
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, …
In this guide, I’ll show you how to add first-party cookie values client-side, which your server-side Google Tag Manager processes can then access. You might be wondering: “Why bother?”. After all, if server-side GTM is running same-site with the website sending …
There are two new custom templates available in server-side Google Tag Manager. These templates have been designed to facilitate Piwik PRO tracking in a server-side container. Piwik PRO Client -> This Client template interacts with the Piwik PRO JavaScript tracker and lets you …
Piwik PRO has two new server-side Google Tag Manager templates, and this article explains what they are and how they work. The first template, Piwik PRO Client, is designed to work in unison with the Piwik PRO HTTP API. Most often these requests are generated by the Piwik PRO …
Google has released a new feature, First-Party Mode (FPM), into public beta. Image source First-Party Mode seeks to make it easier to wrap Google’s measurement and advertising technologies in a first-party, same-origin context. This means that the user’s browser, when …
