Powerline Networking is a technology that uses the existing electrical wiring in a home or building to transmit data. By plugging a special adapter into a power outlet, users can send internet signals through the electrical circuits, allowing for internet access in areas where Wi-Fi may be weak or unavailable. This method is particularly useful for connecting devices like smart TVs, gaming consoles, or computers in different rooms without the need for long cables. It offers a simple and effective solution for improving network coverage and performance throughout a space.