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How can I set up cross-domain tracking between two websites in GA4?

Asked on Aug 28, 2025

Answer

To set up cross-domain tracking in Google Analytics 4 (GA4), you need to configure your data streams to recognize and track users across multiple domains. This involves adjusting the measurement ID settings to include both domains.

Sign in to your Google Analytics account.
Navigate to Admin → Data Streams and select the web data stream you want to configure.
In the data stream settings, click on "More Tagging Settings" and then "Configure your domains."
Add the domains you want to track under "Domains" and ensure they are separated by commas.
Save your changes to apply cross-domain tracking.

Additional Comment:

Ensure that the GA4 tag is implemented on all domains involved in cross-domain tracking.
Cross-domain tracking helps maintain a single user session across different domains, improving the accuracy of user journey analysis.
Verify the setup by checking if the client ID remains consistent when navigating between the domains.

✅ Answered with Analytics best practices.

Ask any question about Analytics & Tracking here... and get an instant response.

How can I set up cross-domain tracking between two websites in GA4?

Asked on Aug 28, 2025

Answer

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