Amtrak, the U.S. National Railroad Passenger Corporation, has officially joined the Concur TripLink ecosystem. The article says the integration lets business travelers book directly on Amtrak.com and the Amtrak mobile app, connect their Amtrak loyalty program, capture negotiated rates, and automatically sync the itinerary and e-receipt with SAP Concur solutions. Amtrak also features a direct connect integration with Concur Travel, letting travelers book a train reservation the same way they book air, hotel, or car reservations. The article says Concur TripLink serves a growing ecosystem of air, hotel, rail, and car suppliers, is used by over 14,000 customers, and supports more than 11 milli…