An LED bulb is a type of light source that uses light-emitting diodes to produce illumination. Unlike traditional incandescent bulbs, which generate light by heating a filament, LED bulbs are more energy-efficient and have a longer lifespan. They consume less electricity, making them a popular choice for both residential and commercial lighting. LED bulbs come in various shapes, sizes, and color temperatures, allowing users to choose the right lighting for their needs. They are available in warm white, cool white, and even colored options. Additionally, many LED bulbs are designed to be compatible with dimmer switches, providing flexibility in lighting control.