Metro Ethernet fiber is a high capacity Internet service offered to businesses using a fiber optic cable for transit between the carrier network and the end-user. The word “metro” refers to the fact that the fiber optic run spans a “metropolitan” area, from one side of the city to another, and “Ethernet” refers to the type of IP handoff involved at each end of the connection.

Unlike copper-based services (such as T1s) that are available just about everywhere, Metro-E is limited only to buildings in which fiber has been connected by a commercial Internet Service Provider (ISP).