The nature of business competition is changing in a fundamental way, and the repercussions for IT are profound. The classic model of company vs. company is starting to give way to a new model: supply chain vs. supply chain. In the 21st century, being the best at producing or selling a superior product is no longer enough. Success now depends on assembling a team of companies that can rise above the win/lose negotiations of conventional trading relationships and work together to deliver the best products at the best price. Excellence in manufacturing is just the admission fee to be a player in the larger game of supply chain competition.