Wi-Fi is a technology that enables wireless communication between devices over a local area network (LAN) using radio waves. It operates within specific frequency bands, such as 2.4 GHz and 5 GHz, allowing devices like smartphones, laptops, and tablets to connect to the internet and communicate with each other without physical cables. Wi-Fi technology employs various standards defined by the IEEE 802.11 protocols, which influence its speed, range, and security features. This wireless connectivity has revolutionized how users access and share information in various environments.