"This is an elegant, non-hype, practical and substantive book about one of the most complex and frustrating issues in modern business: proving and measuring the pay-off of investment in IT. It's among the very best ever on the topic. When 50% of incremental capital investment in this economy is in IT, it's essential reading-and a good read, too."--Peter Keen"An important book which deals with the central investment dilemma of the Information Age. How and when does one invest in IT? What are the range of payoffs? The book contains a powerful set of ideas drawn from a rich collection of field cases to guide general managers in these investment decisions. A must book for general managers who need to deepen their thought processes in this arena."--Warren McFarlan"The question of the returns from IT investments has long been a controversial issue. Lucas provides an interesting perspective, one that endeavors to recognize the complexity at the issue. The business reader will find numerous examples of the various types of returns one can obtain from IT. He...develops a framework that permits evaluation of new situations, a useful addition as more and more organizations find IT an integral part of competing in the 21stcentury."--Michael S. Scott Morton, Sloan School of Technology, MIT