Amadeus is a computer reservations system (or global distribution system, since it sells tickets for multiple airlines) owned by the Amadeus IT Group with headquarters in Madrid, Spain. The central database is located at Erding, Germany. The development center is located at Sophia Antipolis, France. In addition to airlines, the CRS is also used to book train travel, cruises, car rental, ferry reservations, and hotel rooms. Amadeus also provides New Generation departure control systems to airlines.. Amadeus IT Group is a transaction processor for the global travel and tourism industry. The company is structured around two key related areas - its global distribution system and its IT Solutions business area.
Amadeus is a member of IATA, OTA and SITA. Its IATA airline designator code is 1A.
Amadeus was formed in 1987 by an alliance between Air France, Lufthansa, Iberia Airlines and Scandinavian Airlines System.
Other major reservation systems 
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