A network closet is a place where wires/conduits are often run, and equipment can be placed, in order to facilitate the use of local networks.
A network closet also known as a data closet or network cabinet serves as a centralized location within a building or facility where networking infrastructure is concentrated. It is a small room or enclosure designed to house essential networking components such as switches, routers, patch panels, and cabling.
The primary purpose of a network closet is to ensure that network connections are organized, secure and easily accessible. Wires and conduits are routed into the closet, connecting various network devices to create a local area network (LAN).
These devices enable data communication within the building and thus allows users to access resources like servers, printers, and the internet.