Walmart has built a highly efficient supply chain management system centered around its distribution centers and use of innovative IT. It uses over 40 distribution centers located strategically across the US to stock over 80,000 items. Walmart owns the largest private fleet of trucks which it uses to directly pickup goods from manufacturers and deliver 85% of inventory to its stores. The company heavily invests in IT systems to track sales, inventory, and replenish stock based on demand. This efficient supply chain allows Walmart to offer the lowest prices through reduced costs and ensures stores are well stocked.