The book is primarily designed to address corporate strategy issues, but the view of strategy presented here is dynamic, and integrates both corporate and business levels of analysis. Historically, the strategy field has been broken into two fields of study : business level strategy, focusiing on competitive advantage within an industry, and corporate level strategy, focusing on the overall plan for managing a diversified firm. Pedagogically and intellectually, this book is an attempt to bridge the schism between these two levels of analysis, and present a unified treatment of the sources of superior economic performance.