Extranet

The web portal an online travel agency gives a property to manage its own listing. The Booking.com extranet is the best known, and most channels have an equivalent.

Inside it you set rates and availability, edit property content and policies, handle invoicing and respond to reviews. The catch is that it sits outside your property management system, so anything changed there is invisible to your own software until something syncs it back.

That split is the source of a lot of routine pain. Two people editing the same listing in two places produces drift, and drift usually surfaces as a wrong rate or a policy that does not match what the guest agreed to.

The current direction of travel is for PMS and channel manager vendors to pull extranet functions into their own interface, so the property manages the listing in one place and the software pushes changes out. When that happens, deciding which system is the source of truth matters more than the convenience itself, because the pushing system will overwrite whatever it finds.