Learn business growth with Google Analytics 4 › Forums › Google Analytics 4 › Effectively tracking cross-domain user journeys in GA4 based on domain A referrals › Reply To: Effectively tracking cross-domain user journeys in GA4 based on domain A referrals
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You could consider using a referral exclusion in GA4 for domain B, which should exclude traffic that starts on domain B. Then, you can experiment with UTM parameters to determine if a user is coming from domain A. Use these parameters in your links going from domain A to domain B, then set a conditional load of the GA4 tag on domain B based on the existence of a UTM parameter. This way, you’ll only track visitors who came from domain A to domain B, not those who started on domain B.