Book excerpt: "Supply Chain Management" refers to the means by which firms engaged in creating, distributing, and selling products can join forces to establish a supply network with an increased competitive advantage. Companies all over the world are pursuing supply chain as the latest methodology to reduce costs, increase customer satisfaction, better utilize assets, and build new revenues. This book illustrates four levels of evolution, from the beginning stages to the most advanced techniques and processes. Each level is described so a firm can calibrate itself and determine what work remains to be done. A model for building the most advanced stages is also shown. The text also features examples and case studies, with information on the means to develop a communication Intranet, Internet, and privileged Extranet with selected suppliers and customers.