What  is  Galileo &  Why  Use  It

Most companies use a GDS (Global Distribution System) for flight booking, reservation, hotel booking & car hiring. GDS is network that enables travel agencies to access travel data, shop or reserve the flights, car & hotel booking as well. 

Galileo is part of the Travelport group of companies and as of 2017 had a worldwide market share of 21% for airline bookings. In addition to airlines Galileo can be used to book trains, cruises, car rental and hotel rooms. For example, using GDS, a travel agency can find the availability of hotel rooms, flight seats or cars on behalf of their clients and book through the same GDS.