Cross-domain tracking
Keep visitor identity across related domains.
Last updated June 3, 2026
Cross-domain tracking keeps one visitor journey intact when someone moves between your marketing site, checkout, docs, app, or customer portal.
Event model
| Event | Used for |
|---|---|
| cross_domain_id | Visitor continuity across domains |
| linked_session | Attribution continuity between site and checkout |
| return_url | Post-checkout journey stitching |
What happens next
Move from one tracked domain to another and confirm the visitor ID stays consistent in the visitor timeline.
Troubleshooting
Data is missing
Confirm the tracker is installed, the site ID is correct, and the event is not blocked by consent or an ad blocker.
Data looks duplicated
Confirm the tracker is initialized once per page or app boot.
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