Wi-Fi, also known as wireless fidelity, is a technology that allows electronic devices to connect to a wireless local area network (WLAN) using radio waves. It enables devices such as computers, smartphones, tablets, and smart home devices to connect to the internet and communicate with each other without the need for physical cables. Wi-Fi uses radio frequencies within the 2.4 GHz and 5 GHz bands to transmit data wirelessly, providing a convenient and flexible way for users to access the internet and share information. Wi-Fi has become an essential technology in today's digital world, used in homes, businesses, public spaces, and mobile devices.