User Experience Design focuses on how users feel when interacting with a system such as a website or software. The main goal of UX design is to evaluate the user's feelings about the system and make it easy to use. Don Norman invented the term "user experience design" to cover all aspects of a person's experience with a system beyond just usability. UX design helps determine goals and audiences, organize content, and save and make money. It is important for developing strong brand identity and ensuring positive customer experiences.