User interface (UI) design is the process of designing the visual and interactive elements of a product, such as buttons, icons, and menus. The goal of UI design is to create an interface that is both aesthetically pleasing and easy to use. UI designers consider the layout and organization of information, as well as the use of color, typography, and other design elements to create a cohesive and visually appealing product. They also work closely with UX designers to ensure that the interface is intuitive and meets the needs of users. The result is a product with a visually engaging interface that is easy to navigate and use.