Wal-Mart has highly efficient supply chain management practices that have contributed to its tremendous growth and success. It procures goods directly from manufacturers to get the lowest prices. It has over 40 distribution centers across the US that use advanced technology like barcoding to quickly distribute over 80,000 items to stores within 2 days on average. Wal-Mart owns over 3,500 trucks that deliver goods to stores twice a week, and uses cross-docking and inventory tracking systems to maximize efficiency and satisfy customer needs. These integrated supply chain practices are a key competitive advantage for Wal-Mart.