3 Travel Management companies

Amex GBT is the world's leading B2B travel platform, providing software and services to manage travel, expenses, and meetings & events for companies globally.

Amex GBT is a publicly traded B2B travel platform managing corporate travel, expenses, and events for companies worldwide across 140+ countries.

Travelport operates a global B2B travel marketplace and GDS, connecting hundreds of airlines, thousands of hotels, and travel agencies across 160+ countries.