Wal-Mart is one of the most iconic American public companies in history that runs a global chain of large discount department stores. For several years, Wal-Mart has maintained its position as the world’s biggest company in terms of sales volumes. The company was founded in 1962 by the legendary retailer Sam Walton, and is currently the largest employer in the country.

Wal-Mart’s retail operation is divided into 3 parts: Wal-Mart Stores, Sam’s Club retail warehouses, and Wal-Mart International. The retail business is conducted with 9 different store formats: Super centers, food and drug stores, general merchandise stores, bodegas, cash and carry stores, membership warehouse clubs, apparel stores, soft discount stores and restaurants.