Despite it being an older and more practiced field, the question of “What is user interface design?” is difficult to answer because of its broad variety of misinterpretations. While user experience is a conglomeration of tasks focused on the optimization of a product for effective and enjoyable use, user interface design is its complement; the look and feel, the presentation and interactivity of a product. But like UX, it is easily and often confused by the industries that employ UI designers—to the extent that different job posts will often refer to the profession as completely different things.
User experience (UX) design is the process design teams use to create products that provide meaningful and relevant experiences to users. This involves the design of the entire process of acquiring and integrating the product, including aspects of branding, design, usability and function.