Lighting, also known as illumination, is the art of applying light to an area in a way that creates an environment in which the activity therein can be viewed and enjoyed. Lighting has a major role in creating atmosphere and ambience, either for residential or commercial settings. In home lighting, special considerations should be made as to the types of bulbs that are used. The recommendations are to purchase LED or halogen lighting, as they use the least amount of energy for an equivalent brightness level. Proper lighting choices help improve the overall quality of life within a home, and can provide a cost-effective approach to energy savings. In commercial settings, lighting choices can make the difference between a pleasant work environment and a dull and dreary one. Natural light must be maximally used, along with a combination of correct lighting solutions to reach desired aesthetic values and meeting energy-efficiency requirements. Lighting also helps to create a sense of security, especially when used in more public areas. Studies have shown that the proper use of lighting can reduce the level of crime and help to deter offenders. In conclusion, lighting is an integral part of any interior design, and should never be taken for granted. Taking the time to consider the proper lighting solutions for a particular space can create a dynamic and inviting environment that is both cost-effective and energy-efficient.