Wal-Mart has been able to sustain its competitive advantage and superior performance over the years through several factors:
1) Efficient distribution capabilities and low-cost partnerships with suppliers
2) Advanced data collection and analysis to improve demand forecasting
3) A customer-oriented workforce culture focused on low prices and continuous improvement
4) Maintaining everyday low prices (EDLP) to increase customer satisfaction and loyalty
To continue this success, Wal-Mart should focus on cost leadership through large scale operations and private label brands, address public relations issues, and enhance worker benefits to protect its reputation.