Digital technologies are creating value and rearranging roles in the travel industry. Here's how industry leaders are profiting from the change. Over the past 20 years, advances in digital technologies have driven numerous innovations and disruptions in the travel industry. These technologies and the companies that offer them have rearranged the industry, leaving some players behind--travel agents, for example--while introducing more complexity into the value chain between travelers and destinations. More recently, mobile technologies have taken center stage as consumer behavior shifts with astonishing speed toward researching and booking travel through smartphones.