A Local Area Network (LAN) is a group of computers and devices connected within a limited area, such as a home, school, or office. It allows these devices to communicate and share resources, like files and printers, efficiently. LANs typically use wired connections, like Ethernet cables, or wireless connections, such as Wi-Fi. LANs can vary in size and complexity, from a few devices in a small home network to hundreds of devices in a large corporate environment. They are essential for enabling collaboration and resource sharing, making them a fundamental part of modern computing.