With server-side tagging, you can send any types of HTTP requests to the Server container. The Server container parses these, fires up container instances, and sends the data onwards to first-party data stores and third-party vendors alike. Often these requests contain URL strings encoded in query parameters. A prime example is the document location parameter in Universal Analytics requests. Server-side Clients would parse these URL strings and convert them into the format required by the event data object.
One of the biggest perks of working with server-side tagging is that you can establish a first-party context between the site sending the data and the server-side tagging endpoint itself. This leads to many benefits, including improved control of the data streams, the possibility to set cookies that extend beyond ITP’s restrictions, and reduced stress on an already very likely overloaded Content Security Policy. However, by default you only map a single custom domain to any given tagging server.
There’s a new custom variable template in town! The Data Layer Picker template lets you create variables that have a singular, exceptional (in Google Tag Manager’s context, at least) purpose: You can access the keys and values that were in the object pushed into dataLayer itself. And … that’s it! Read on to understand why this might be useful. Tip 123: Direct access to the dataLayer.push() If you know your Data Layer Variable, you’ll know that it comes in two versions.
One of the big omissions, at least for now, in Google Analytics 4 is the customTask. It is unfortunate, but no such mechanism exists in the client-side SDKs. This means that you won’t be able to do all the magical things that customTask enables in Universal Analytics. One of the biggest headaches is how to collect extremely useful fields such as the Client ID, as these are not available by default in the Google Analytics 4 reporting interface.
A recent update to Google Tag Manager introduced container notifications. By subscribing to container notifications, your Google Tag Manager login email address can be configured to receive an email for some of the key workflows in Google Tag Manager: containers getting published, and containers being submitted for approval (Tag Manager 360 only), for example. Be sure to check out the official help center article about container notifications. In this article, I’ll walk you through the feature and share a couple of tips on how to make it even more useful!
When you create a Server container in Google Tag Manager, GTM creates an App Engine deployment in the Google Cloud Platform for you. App Engine is a managed serverless platform, which basically means it’s a (set of) virtual machine(s) running in the cloud, with some extra bells and whistles added to make managing it easier. A potentially useful thing that App Engine does is decorate all incoming HTTP requests with some HTTP headers that can be used in the app.
Since the release of Server-side tagging in Google Tag Manager, I’ve jumped at every opportunity to celebrate the tools it provides for improving end-user privacy and data security. One of the biggest benefits is obfuscation-by-default. Since all hits are passed through the server-side proxy, the default view for any third-party tool (such as Google Analytics) is that of the server in the Google Cloud rather than the browser and device with which the user was browsing the site.
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