Lighting is essential for all living things, as it exposes all forms of life to the effects of day and night, and increases the ability of humans to move, work, and play in the darkness. Artificial lighting has been used since prehistoric times to light up caves, provide a source of heat, and provide a means of communication between groups of people. Today, lighting plays many important roles and is an integral part of modern society. Lighting illuminates our homes, offices, and other indoor spaces so that we can safely move around in the dark. Safety is paramount when it comes to light, and a range of light fittings are used to ensure that spaces are brightly lit and that shadows are minimal. Proper lighting can also help reduce energy consumption, as well-designed lighting systems will only provide the amount of light required for the task at hand. Lighting is also an important component of interior design. Lighting can create atmosphere, create a sense of drama, and highlight specific features within a space. Most lighting today is LED, which is a long-life lighting source and is energy-efficient. Lighting is also a fundamental part of outdoor spaces, where it helps improve visibility in the dark and improves security to reduce the risk of crime. Outdoor lighting can be used to provide a friendly atmosphere, as well as to create a more formal covering of an area. Finally, lighting is an integral part of special events, such as weddings and parties, where it is used to create atmosphere and help people to celebrate and communicate. Lighting is an important factor in everyday life, from providing safety and security to enhancing events and decorating interiors. It is essential to our daily lives and will continue to be so for many years to come.