Customers, Demand centers Sources: Regional warehouses: Sinks Stocking What Is A Supply Chain? points ports Supply Inventory warehousing costs Production/ purchase Transportation Transportation costs costs Inventory costs warehousing costsWhat Is A Supply Chain? Supply Sources: plants vendors ports Regional warehouses: Stocking points Field warehouses: Stocking points Customers, Demand centers Sinks Production/ purchase costs Inventory & warehousing costs Transportation costs Inventory & warehousing costs Transportation costs