Originally published at sunnybadgujar.com . Amadeus is where most travel portals start, and for good reason: it's the largest GDS, the content is deep, and the modern Amadeus for Developers APIs are plain REST with JSON — no arcane messaging formats to learn on day one. But there's a gap between "I can search flights from a code sample" and "I've shipped a B2B travel portal that sub-agents actually book on." This post is about closing that gap. I run a travel reservation platform tha...