Wal-Mart has achieved tremendous success through a strategic focus on dominating retail markets wherever it operates, expanding aggressively in the US and internationally, and creating widespread brand recognition associated with low prices and quality. It implements these strategies by maintaining low costs, opening numerous store formats like supercenters and Sam's Club warehouses, and branching into new retail sectors. While largely successful, Wal-Mart faces some criticism that it has negatively impacted local businesses and pays low wages.