A local area network (LAN) is a group of computers and devices connected within a limited area, such as a home, school, or office. This network allows users to share resources like files, printers, and internet connections. LANs typically use wired connections, such as Ethernet cables, or wireless connections, like Wi-Fi, to facilitate communication between devices. LANs are essential for enabling collaboration and efficient data sharing among users in close proximity. They can support various devices, including computers, smartphones, and tablets, making it easier for people to work together. Additionally, LANs can be secured with passwords and firewalls to protect sensitive information from unauthorized access.