WiFi is wireless networking technology allowing devices to connect to the internet and each other without physical cables. WiFi networks use radio waves to transmit data between devices and wireless access points connected to wired networks. WiFi is ubiquitous in homes, businesses, and public spaces, enabling mobile computing and internet access. Public WiFi availability has become expected infrastructure in libraries, transit, parks, and municipal facilities. Municipal WiFi initiatives have provided public internet access in downtown areas or underserved communities. WiFi security matters—unsecured networks risk data interception, making encrypted connections (WPA3) and VPN use important. WiFi standards continue evolving, with newer versions (WiFi 6, WiFi 7) offering faster speeds and better performance in congested environments.