"Wal-Mart has the biggest IT systems of any private company in the world and supply chain Wal-Mart has made important investments in supply chain management" (Why Wal-Mart's supply chain is so successful, n.d.). Wal-Mart's way of doing business is founded on a low price approach and low transportation expenses which permit it sell its products at the lowest achievable prices. "In return for its Everyday Low Price Strategy, Wal-Mart's suppliers, both large and small, either break even or make profit supplying at Wal-Mart's stores. But the real winners are Wal-Mart's customers who save thousands of dollars buying at low prices. Since Wal-Mart stores began selling groceries almost three dozen regional grocery suppliers have struggled to match or simply run out of business. On average Wal-Mart's annual sales are $350 billion and it has more than 7,000 stores, 120 distribution centers and operations spanning fifteen countries. Nearly two million employees at Wal-Mart focus on cost, customers and continuous improvement on a daily basis. Other major retailers like Target and Home Depot have emulated Wal-Mart's logistics strategies and tactics" (Why Wal-Mart's supply chain is so successful,...

Store managers are taught to run one store at a time, run one department at a time, and take care of one customer at a time. Decisions are made by store teams in order to make the individual stores function at their best with superior execution. With recognized vendor affiliations with top manufacturers, Wal-Mart has put into practice advanced logistics solutions like RFID (radio frequency identification). These resolutions help maintain lower expenses, recognize out-of-stocks and increase sales (Why Wal-Mart's supply chain is so successful, n.d.).
References

Handfield, R. (2011). What is Supply Chain Management? Retrieved from http://scm.ncsu.edu/scm-articles/article/what-is-supply-chain-management

Mentzer, J.T., DeWitt, W., Keebler, J.S., Soonhoong, M., Nix, N.W., Smith, C.D., & Zacharia, Z.G. (2001). Defining Supply Chain Management. Journal of Business

Logistics, 22(2), 1-25.

Why Wal-Mart's supply chain is so successful? (n.d.). Retrieved from http://supply-chain-case-studies.blogspot.com/2008/06/walmart-scm-strategy-analysis.html