EDIFACT (Electronic Data Interchange for Administration, Commerce and Transport) is the UN-standard messaging protocol that has powered airline reservations, ticketing, and inter-system communication since the 1980s. Inside Amadeus, EDIFACT is the language that GDS systems use to talk to airline reservation systems exchanging booking data, ticket records, schedule changes, and payment confirmations in structured message formats.
Every time a travel agent books a flight and the airline confirms the seat, EDIFACT messages are passing between systems in the background. Despite being decades old, EDIFACT still processes the majority of the world's airline tickets today.
All major airlines maintain EDIFACT connections to Amadeus GDS
BSP ticketing and settlement still runs on EDIFACT-based records
Amadeus Cryptic commands generate EDIFACT-formatted transactions behind the scenes
Legacy mid-office and back-office systems are built around EDIFACT record structures
NDC uses modern REST/JSON APIs instead of EDIFACT. Airlines adopting NDC are creating a parallel distribution channel that bypasses traditional EDIFACT based GDS messaging. Travel platforms now need to handle both EDIFACT-based GDS responses and NDC API responses simultaneously. This requires developers fluent in both paradigms.