Are Corporate Cards Still the Best Way to Settle Up?

What is the best way for corporations to pay for their T&E; expenses? There are new entrants, new processes and new airline payment methods in the marketplace. With access to the entire travel offer being sought by corporations, and the existence of multiple suppliers, how does a corporation ensure the essential elements of managing their T&E; programme are being optimised? What is the best way for companies to settle with their suppliers?