Wi-Fi is a technology that utilizes radio wave frequency to enable wireless communication between devices via a local area network (LAN). It is primarily used for Internet access in homes, offices, and public spaces, facilitating the connection of devices such as laptops, smartphones, and printers to the Internet without physical cables. Wi-Fi standards are defined by the Institute of Electrical and Electronics Engineers (IEEE) under the 802.11 family of protocols. The technology has evolved over the years with multiple enhancements in speed, range, and security.