The acronym "WLAN" stands for "Wireless Local Area Network". WLANs enable devices to connect to a local network without physical cables, facilitating internet access and communication within a limited geographical area, such as homes or offices. This technology is essential for providing flexibility and mobility, allowing users to connect laptops, smartphones, and other devices wirelessly. WLANs utilize various standards, including 802.11, to ensure efficient and secure connections.