In travel management, the term Global Distribution System (GDS) relates to a system that distributes travel products to agents around the world.
Travel agencies traditionally relied on GDS for services, products & rates in order to provision travel-related services to the end consumers. A GDS can link services, rates and bookings consolidating products and services across all three travel sectors: i.e., airline reservations, hotel reservations, car rentals. In the world of air ticketing they remain the dominant distribution channel. However in other areas, online travel agents (OTAs), such as Booking.com, are now cleaning up in terms of the sheer volume of content and bookings.