What is the difference between UX & UI Design? UX Design refers to the English term “User Experience” or user experience design. While UI Design refers to the English term “User Interface” or in French Design de l’interface UI. Often confused, these two terms are nevertheless very trendy. UX/UI designers are multiplying and product creation is increasingly based on a UX method. Despite the high demand for UX/UI Designers and the popularity of these professions, these two terms are still misunderstood and sometimes confused. However, it is essential to understand them. Indeed, despite their professional relationship, UX and UI have different roles, aspects and processes. What is UX Design? Donald Norman, the father of the term "user experience" and co-founder of NNGroup, clearly defined user experience in the late 1990s. It emphasizes the relationship between users and the brand in question. For him, the user experience encompasses all aspects of the user's interactio...