Lighting design serves many purposes, dimensions, and levels. In the past, some places primarily needed adequate and appropriate lighting for their spaces, which was often the domain of systems engineers or architects. However, today, we recognize the broader significance of lighting as it enhances the value of architectural work.

Lighting can create a pleasant atmosphere and evoke emotional responses. Its role has expanded significantly, such as using lighting to enhance the aesthetic appeal of buildings and rooms or in offices to improve employee productivity. In retail design, lighting can increase the attractiveness of products, influence purchasing decisions, and establish brand identity. In some spaces, lighting may focus on conveying specific emotions or moods, using light as a medium. As the field has grown in complexity, specialized professions in lighting design have emerged.