Diagram explaining EDIFACT messaging architecture used by airlines, travel agencies, Sabre, Amadeus, Galileo, and GDS systems to exchange standardized reservation, ticketing, and travel data before modern REST APIs and JSON.

July 17, 2026

API standard before APIs existed.

Before REST APIs, JSON, and cloud integrations, the global travel industry relied on EDIFACT, an international messaging standard that enabled airlines, GDS…