O'Brien's Introduction to Information Systems 13e continues to reflect the movement toward enterprise-wide business applications. George Marakas from the University of Kansas joins as a co-author on this new edition. New real world case studies correspond with this curriculum shift. The text's focus is on teaching the general business manager how to use and manage the most current IT technologies such as the Internet, Intranets, and Extranets for enterprise collaboration, and how IT contributes to competitive advantage, reengineering business processes, problem solving, and decision-making.