EIGRP, or Enhanced Interior Gateway Routing Protocol, is a dynamic routing protocol used in computer networks to facilitate the exchange of routing information between routers. It is developed by Cisco and is known for its efficiency and speed in converging, which means it quickly updates routes when network changes occur. EIGRP uses a distance vector routing algorithm, which considers both the distance and the reliability of routes. EIGRP supports multiple network layer protocols, including IP, IPX, and AppleTalk. It employs a unique metric system that combines bandwidth, delay, load, and reliability to determine the best path for data transmission. This makes EIGRP a popular choice for organizations looking for a robust and scalable routing solution.