Software plays a critical role in today's global information economy. It runs the computers, networks, and devices that enable countless products and services. Software varies in size from vast enterprise and communications systems like the enormous enterprise resource planning system from SAP to the tiny app Angry Birds. This book offers a profile of the software industry and the companies in the industry. It describes the primary products and services produced; reviews its history; explains how the industry is structured; discusses its economics and competitive environment; and examines important trends and issues including globalization, workforce, regulation, and the emergence of new software business models. Software runs the computers and networks that support the flow of information in the global economy, and this book provides a real look at the intricacies of this industry.