User interface design, or UI design, goes beyond crafting the visual elements of a digital product. It's a multidisciplinary practice that also focuses on the functionality and interactivity of interfaces. While aesthetics like color, typography, and layout are crucial, the ultimate goal is to create an intuitive and efficient experience.

Great UI design marries form with function, ensuring that the interface is not only visually pleasing but also highly interactive and user-friendly. In this way, the design becomes "invisible," allowing users to complete their tasks effortlessly, without being distracted or hindered by the interface itself.