Glossary

The hospitality data glossary.

Plain-language definitions of the technical terms reshaping hotel guest data, identity, and the data layer agents run on.

Guest identity resolution
The process of matching and merging fragmented guest records across hotel systems into one authoritative profile.
Hotel master profile
One durable record per real guest, sitting above the stack. The guest card inside one property system is the stay that system was told. The Master Profile is the person that stay belongs to.
Hotel semantic layer
A shared business representation of hotel data. It defines what guests, reservations, stays and folios mean. It does not decide which records belong to the same person.
Unified guest profile
One person-record true across a hotel group's properties and systems. Not a PMS guest card and not a marketing 360 label. Casa Layer calls that durable record a Master Profile.