How to Enable Cross Domain Tracking in Google Analytics 4 (GA4)
By default, Google Analytics does not monitor website visitors and their activities across various domains. However, you can enable Cross Domain Tracking in Google Analytics 4 in order to track these website visitors and their actions across two or more domains, essentially tracking your user as the same individual on each site. As a prerequisite, you should use the same GA4 tracking code (Measurement ID) for all your website where you want to enable cross-domain tracking. This quick and easy guide will show you how to enable cross-domain tracking in Google Analytics 4 (GA4)!
In case you prefer to watch a video, here's a tutorial you can find on XYZ Lab's Youtube Channel!
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Step 1️: Navigate to Admin
Step 2️: Navigate to Data Streams and click on your Data Stream
When it comes to cross-domain tracking, it is important to set up your domain under the same data streams. This means that all your websites which you want to enable the cross-domain tracking for should use the same GA4 tracking code / Measurement ID.