Walmart was founded in 1962 by Sam Walton. It now operates over 8,500 stores globally under 55 names. Walmart pioneered an efficient supply chain and logistics system focused on reducing costs. This allowed it to procure goods directly from manufacturers and offer consistently low prices to customers, fueling its rapid growth to become the world's largest company by revenue. Key to its success was heavy investment in technology and data systems to track inventory and sales across its vast network of stores.