What is a LAN?

A LAN, or Local Area Network, is a system that allows computers and devices within a confined geographic area, such as a home, office, or building, to connect and communicate with each other. The primary purpose of a LAN is to enable resource sharing, including file sharing, printer access, and network services, among devices in close proximity.

Local Area Networks are characterized by their high data transfer rates and relatively low latency, making them ideal for environments where multiple devices need to interact quickly and efficiently. They are typically maintained over Ethernet cables or wireless technologies, supporting a range of devices from desktops and laptops to smartphones and printers.

LANs are distinct from broader networking concepts, such as wide area networks (WANs), which connect devices over larger geographic distances. This specificity and the inherent advantages of LANs in terms of speed and resource management set them apart as vital components of modern computer networking.