If the last several years are any indication, corporate travel trends are pointing in one direction: online. A recent Global Edition report from PhoCusWright reveals that a combination of recessionary pressures, advances in technology and changes in U.S. business traveler behavior has driven strong growth in the online corporate travel marketplace. According to PhoCusWright's U.S. Corporate Travel Report: Market Size and Technology Trends, a new wave of companies either turned to online booking tools, or else accelerated their online adoption efforts during the recession. In 2009, the online channel accounted for half of all corporate travel bookings. But the recession brought greater emphasis on cost-cutting, and more companies began to insist that employees book their air, car and hotel online to save money. In addition, mobile and tablet apps have quickly gained popularity, as companies seek to accommodate their travelers' preferred modes of behavior. As a result, online...