A restaurant chain is a group of related restaurants that share a common brand and menu, operating under the same ownership or management. These establishments are typically found in multiple locations, often across different cities or countries. The goal of a restaurant chain is to provide a consistent dining experience, allowing customers to enjoy familiar food and service no matter where they visit. Many restaurant chains focus on specific types of cuisine, such as fast food, casual dining, or fine dining. Popular examples include McDonald's, Starbucks, and Olive Garden. These chains often benefit from economies of scale, allowing them to reduce costs and offer competitive prices to customers.