Amadeus

Amadeus is the world's largest travel technology company by revenue and market reach, providing the IT infrastructure that powers reservations, inventory management, pricing, and airport operations for hundreds of airlines, thousands of travel agencies, and a significant share of the global hospitality sector. Founded in 1987 by four European airlines — Air France, Iberia, Lufthansa, and SAS — Amadeus has grown from a shared reservations utility into a publicly traded technology giant that processes hundreds of millions of transactions daily.

What Is Amadeus?

Amadeus operates across two primary business segments. The first is its Distribution division, which runs the Amadeus Global Distribution System (GDS) — the network through which travel agencies and online booking tools access real-time flight availability, fares, and schedules from airlines worldwide. The second and larger business by revenue is its IT Solutions division, which develops and hosts the Altea Passenger Service Suite — a cloud-based PSS that includes the Altea Reservation system, the Altea Inventory system, and the Altea Departure Control System. Altea is used by more than one hundred airlines, including many of the world's largest carriers such as Lufthansa, British Airways, Iberia, Qatar Airways, and Air France. Amadeus also provides revenue management, payment processing, analytics, and airport IT products.

How It Works in Practice

In the distribution context, Amadeus acts as a real-time marketplace. Airlines file their inventory and fares into Amadeus's GDS, and travel agencies access that data through terminals running the Amadeus Selling Platform or through APIs integrated into their own booking tools. A travel agent in Seoul can simultaneously query seat availability on dozens of airlines in real time, compare fares, and issue tickets — all through the Amadeus network — without direct connections to each carrier's own reservation system. Airlines pay distribution fees to Amadeus for each booking; agencies receive a booking fee from airlines in return for directing bookings through the GDS.

In the PSS context, Amadeus hosts the Altea platform on its own data centers and delivers it to airline customers as a managed service. Airlines do not run Altea on their own servers; instead, Amadeus operates the infrastructure, handles updates, and guarantees uptime. This shared infrastructure model means that when one airline deploys a schedule change, the data is immediately visible to all distribution partners, all interline partners, and all airport DCS instances without any manual synchronization.

Why It Matters

Amadeus occupies a structurally critical position in the aviation value chain. Because so many airlines use both the Amadeus GDS and the Altea PSS, the company becomes the common data layer connecting carriers, agencies, and airports. This integration depth creates enormous switching costs for airline customers: an Altea migration involves re-training thousands of airport agents, reconfiguring hundreds of interline agreements, and rebuilding connections to loyalty systems, fraud tools, and government security platforms simultaneously.

Amadeus has also been central to the industry's shift toward New Distribution Capability (NDC) and Offer and Order Management, investing heavily in next-generation retailing infrastructure that moves the airline away from the legacy EDIFACT-based transaction model that has dominated since the 1970s.

Key Facts and Figures

• Amadeus was founded in 1987 in Madrid and listed on the Spanish stock exchange (BME: AMS) in 2010.
• The Amadeus GDS processes more than 500 million billable transactions per year across all travel verticals.
• Altea PSS is used by airlines accounting for over 40 percent of global scheduled passenger traffic.
• Amadeus's data center in Erding, Germany, is one of the largest civilian data centers in the world, processing tens of thousands of transactions per second.
• The company employs approximately 19,000 people across more than 190 countries.
• Amadeus acquired Navitaire in 2016 for approximately 830 million dollars, adding a PSS platform optimized for low-cost carriers that use simplified inventory models.

Related Concepts

Global Distribution System, Passenger Service System, Sabre, Travelport, New Distribution Capability, Altea