User experience (UX) design focuses on optimising the entire user journey throughout a website. It goes beyond how things look and instead focuses on how they work for end users.
UX designers use methods like user interviews, A/B testing, and analytics to inform decisions. They create detailed user personas, map out complex user flows, and develop information architectures. The goal is to improve the overall experience people have when using a website, from start to finish.
See also: User psychology, Responsive design, User interface
Further reading: The Difference Between Web Design, UI and UX Design