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Cross-domain tracking for a five-site travel booking platform

Sessions were fragmenting as visitors moved between the marketing site, the booking engine and the payment host. I configured cross-domain linking and consistent referral exclusions so all five properties report as one clean user journey.

ClientTravel booking platform
PlatformMulti-site
Timeline4 weeks
ToolsGA4, GTM, Looker Studio

Sessions were fragmenting as visitors moved between the marketing site, the booking engine and the payment host. All five properties needed to report as one clean user journey.

What I did

  • Configured cross-domain linking across all five domains
  • Set consistent referral exclusions to prevent session breaks
  • Unified enhanced ecommerce dataLayer across booking engines
  • Built a consolidated Looker Studio report showing the full journey

The result

5domains unified
95%+booking attribution accuracy
GA4Cross-domainLooker Studio

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