CIOs must know their customers to know the business

CEOs are seeking to generate more revenues from their emerging digital businesses, forcing CIOs to become more familiar with their company's customers. Digital agendas are devouring CIOs' attention and forcing them to partner with the CEO and the CMO.The trend represents a sea change of sorts for the CIO, whose role evolved sharply from that of a custodian of back-office systems to a curator of customers. Three CIOs who manage technology for global businesses discussed what that evolution means