Interior design is the art and science of enhancing the interior of a space to create a more aesthetically pleasing and functional environment. It involves selecting color schemes, furniture, lighting, and materials to reflect the desired style and purpose of the room. Interior design can range from residential homes to commercial spaces, blending creativity with practical considerations like spatial layout, ergonomics, and sustainability. The goal is to optimize a space for comfort, efficiency, and beauty, aligning the design with the needs and personality of its inhabitants or users.