The powerful backing of American Express Global Business Travel. Don't do business without it. American Express Global Business Travel (GBT) is the world’s leading business partner for managed travel. We help companies and their employees prosper by making sure travelers are present where and when it matters. We keep global business moving with the powerful backing of travel professionals in more than 140 countries. Companies of all sizes, and in all places, rely on GBT to provide travel management services, organize meetings and events, and deliver business travel consulting.