What is User Experience Design? What is the difference to User Interface Design? An introduction to the areas of study categorized under the umbrella of “user experience”. When you work with user experience, it’s crucial to have a good understanding of what those areas are so that you know what tools are available to you. For example: UX Writing, Research, Visual Design, etc. You need to know examples of good and bad design to avoid common mistakes. In addition to that you learn the importance of usability over aesthetics.