Lighting is the deliberate application of light—natural or artificial—to illuminate spaces for visibility, safety, productivity, and aesthetic enhancement. In professional and industrial contexts, lighting design follows international standards (CIE S 017, EN 12464-1) that specify illuminance levels (lux), uniformity ratios, glare ratings (UGR), and color rendering requirements (CRI). Modern lighting systems integrate LED technology, smart controls (DALI, 0-10V), and energy management to achieve both functional and sustainability goals.