In the 1960s through the 1970s, companies realized strong engineering, design, and manufacturing functions were strong market strategy keys to create and capture customer loyalty. As the demand for new products rose in the 1980s, these market requirements were to increase their flexibility and responsiveness to adapt existing products and processes or to develop new ones in order to meet customer needs. As manufacturing improved in the 1990s, managers began noticing material and service inputs involving suppliers and their major impact on an organization’s ability to meet customer needs. As a result of these changes, organizations now find that it difficult to manage their own organizations. First, they must be involved in the management of their network of all upstream firms that provide directly or indirectly, as well as the network of downstream firms, which are responsible for delivery and market service of the product to the end customer. In order to succeed, managers have to realize that they cannot do it alone and they must work together on a daily basis with the whole organizations in their supply chains. Because supply chain management involves all functions within an organization, managers need to know what a supply chain is, why it is important, and the impact of supply chain management on the success and profitability of their organization. Today, Wal-Mart topped the list of the America’s biggest companies on the Fortune 500 list, “with sales of almost $345 billion — more than a quarter of a trillion dollars” (Forbs). Wal-Mart’s supply chain management is becoming recognized as a core competitive strategy.
A supply chain is a system through which organizations deliver their products and services to their cus ...