Walmart is an American multinational retail corporation that operates a chain of hypermarkets, discount department stores, and grocery stores. It is the world's largest company by revenue and one of the world's most valuable companies. Walmart has over 2 million employees worldwide and operates under different names in 15 countries. It sources products from over 2,500 minority- and women-owned suppliers. Walmart uses innovative supply chain and inventory management strategies like just-in-time and radio frequency identification to deliver low prices efficiently. In India, Walmart has a joint venture called Best Price that operates wholesale stores targeting small business owners.