The document provides an overview of Li-Fi technology, which uses visible light communication to transmit data wirelessly using LED bulbs. It discusses how Li-Fi works by transmitting data through small changes in the intensity of light that are undetectable to the human eye. Li-Fi provides higher bandwidth, efficiency, availability and security compared to traditional Wi-Fi networks. The document also outlines some of the advantages of Li-Fi such as higher speeds of up to 224 gigabits per second, more available spectrum than radio frequencies, improved security since light cannot pass through walls, and its ability to be used in places where Wi-Fi signals cannot reach or are restricted.