The world's most widely deployed wireless computer networking standards
Today’s IEEE 802.11 group of Wi-Fi standards are the world's most widely deployed wireless computer networking standards. They are used in most home and office networks to allow laptops, printers, smartphones and a host of other popular consumer electronics products to talk to each other and access the Internet without being connected by traditional wires.
More specifically, IEEE 802.11 is a set of media access control (MAC) and physical layer (PHY) specifications for implementing wireless local area network (WLAN) computer communication in the 900 MHz and 2.4, 3.6, 5, and 60 GHz frequency bands. It has continued to evolve since the official publication of the first wireless LAN standard in IEEE Std. 802.11-1997 and many subsequent enhancements.