A business chain is composed of a number of connected business locations that share a brand name and provide similar or the same [[product (business)|products and services. While chains using the same brand name could be as small as two stores or customer-oriented offices in different locations, to McDonald's, which is one of the largest retail business in the world, in addition to being one of the biggest chains. Retail chains such as fast-food outlets and department stores like Wal-Mart are the best recognised chains,
There are two main models of chain businesses. All locations of a chain can be owned by a single entity, with more or less extensive reliance on the same supply chains, standardized systems of personnel training, and centralized management. Franchises, on the other hand, work on a system of licensing, whereby individual business owners can use the brand name and other customer magnets in exchange for a licence fee and compliance with the basic offerings and branding philosophy of the franchiser.