Interior design is the art and science of enhancing the interiors of a space to create a more aesthetically pleasing and functional environment. Interior designers work with both residential and commercial spaces, focusing on elements such as color schemes, furniture, lighting, textures, and spatial arrangements. Their goal is to optimize the use of space while reflecting the personality or brand of the occupants. They also consider factors like ergonomics, sustainability, and building codes to ensure comfort, safety, and functionality. Interior design blends creativity with technical knowledge to improve the quality of interior environments.