ReCAPTCHA V3 With Google Tag Manager Server-Side Tagging

I’ve written about Google’s reCAPTCHA v3 before. It’s a verification API, which analyzes the signals fed into it and returns a bot score, based on how “bot-like” the hits are. It’s a great way to validate whether or not to collect data from certain sources that exhibit bot-like behavior. You’ll want to ignore those in your analytics tools, for example, as they tend to add a lot of (unrealistic) noise to the data set. Read More…

Provision Server-Side Tagging Application Manually

The automatic provisioning process of the Google Tag Manager server-side tagging service is extremely useful. With just a few clicks of the button, you can have a fully functional (albeit limited to testing use) server-side tagging endpoint on the Google Cloud Platform (GCP). For a video overview of the automatic deployment, see this video. However, the automatic provisioning process creates a new Google Cloud Platform project and, at the time of writing, always deploys the App Engine application (on which the tagging server runs) in the us-central-1 GCP region. Read More…

#GTMTips: The URL Parser Variable Template for Server Containers

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. Read More…

Facebook Conversions API Using GA4 Web Tags and a GTM Server

Facebook has now officially released their Conversions API tag template for server-side tagging in Google Tag Manager. With this tag template, you can create a server-side tag that fires with any Client designed to parse requests into a unified event model. One such Client already exists, and every single Server container has it built-in: the GA4 Client. If you haven’t yet deployed a Server container, check out this video walkthrough for more details on how to do it. Read More…

#GTMTips: Map Multiple Domains to a Server-Side Tagging Endpoint

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. Read More…

Write to Google BigQuery From a GTM Server Container

Ever since it was released that server-side tagging in Google Tag Manager would run on the Google Cloud Platform stack, my imagination has been running wild. By running on GCP, the potential for integrations with other GCP components is limitless. The output to Cloud Logging already introduces interesting pipeline opportunities, but now it gets even better. It’s finally possible to write directly to Google BigQuery from a Client or tag template! Read More…

#GTMTips: Tips for Logging in Server-Side Tagging

One of the largest costs in a server-side tagging can be logging. Google warns about this in their official documentation, and it’s definitely something to keep a keen eye on if your server-side endpoint processes enough data per month. How much should it process for logging to become an issue? It depends, but you could start seeing some impact once the endpoint processes >1 million incoming requests per month. The best way to find out if logging is a problem is to visit the Billing dashboard in your server-side tagging Google Cloud project and check what the portion of Log Volume is in your monthly costs. Read More…

New Google Tag Manager Web Container Client for Server Side Tagging

With the introduction of server-side tagging in Google Tag Manager, the variety of things you can do with your own server-side proxy is mind-boggling: Reduce client-side bloat by consolidating data streams and distributing them to vendor endpoints server-side. Improve data security by adding safeguards and validations to prevent harmful data from being sent to vendor endpoints. Enrich data server-side, by combining the incoming data stream with data from APIs and data stores that you own and control. Read More…

#GTMTips: Utilize App Engine Headers in Server-Side Tagging

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. Read More…

#GTMTips: Get True IP Anonymization With Server-Side Tagging

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. Read More…