This overview of contemporary information technology (IT) — computing, communications, business solutions, and services-management — explains the issues of effective management of information services activities and highlights the areas of greatest potential application of evolving technology. In this new edition, HBS professors Applegate, McFarlan, and McKenney address the development of an IT-enabled strategy and organization design that position a firm to simultaneously achieve the large-company attributes of scale, scope, and efficiency, and the flexibility, speed, and responsiveness of a small firm.