While UX Design is the abbreviation for User Experience Design, UI Design denotes User Interface Design. To put it very simply, User Interface Design is the interface as seen by the user when they navigate through your website/application, and User Experience Design is the experience or the feeling the users have while navigating through it. Though they are closely interrelated, they are not the same. A good UI UX design company understands that the interface and experience should be both compatible and friendly.