What are the Four Enablers of Purchasing and Supply Chain Excellence?

What are the Four Enablers of Purchasing and Supply Chain Excellence?

In a minimum two page paper identify the four enablers of purchasing and supply chain excellence. Start your research in class and identify each of the four and their key components. From there expand your descriptions to explain why each is so important and any tools available to help each enabler to become better. Include your resources on a separate page.