OTA (Online Travel Agency)

An OTA (Online Travel Agency) is a digital platform that allows consumers or businesses to search, compare, and book travel products, flights, hotels, car rentals, holiday packages, and activities entirely online. OTAs are the consumer-facing layer on top of GDS systems like Amadeus, pulling live inventory and fares to display on their websites and mobile apps.

The world's largest OTAs Booking.com, Expedia, MakeMyTrip, Cleartrip are all connected to Amadeus GDS at enterprise scale. But hundreds of regional and niche OTAs are also built on Amadeus, serving specific markets, corporate segments, or travel verticals.

• Inventory and fares: Amadeus GDS (flights, hotels, cars)

• NDC content: Amadeus NDC Adapter for airline direct offers

• Booking engine: Amadeus Enterprise or Quick Connect API

• Mobile app: Amadeus Quick Connect API

• Payment and ticketing: BSP plus payment gateway integration

Startups and regional OTAs typically start with Amadeus Quick Connect a faster, lower-cost integration path that gets a booking engine live in weeks. As booking volumes grow, they migrate to Amadeus Enterprise API for full GDS access, Multi-PCC capability, and custom fare negotiation.