How the GDS work
The 500,000 Travel Agencies that use the GDS will have established a contract with one of them, either: SABRE, AMADEUS or TRAVELPORT (Galileo/Apollo or Worldspan).
By connecting to the system they can perform searches with a selection of specific parameters, in particular:
The screen appears as follows:
Many Travel Agencies, especially on an international level, are part of a Consortium (Consortia). The main consortia are:
The Consortia usually request negotiated rates from the hotels. The agencies that belong to a consortium make bookings requesting both the negotiated rates and the BAR (Best Available Rate).