The key elements of user experience design are; visual design, information architecture, interface design, usability & accessibility, performance.
User experience design (UXD or UED) is any aspect of a user's experience with a given system, including the interface, graphics, industrial design, physical interaction, and the manual. In most cases, User Experience Design fully encompasses traditional Human-Computer Interaction (HCI) design, and extends it by addressing all aspects of a product or service as perceived by users.
User experience (UX) involves a person's emotions about using a particular product, system or service. User experience highlights the experiential, affective, meaningful and valuable aspects of human-computer interaction and product ownership. Additionally, it includes a person’s perceptions of the practical aspects such as utility, ease of use and efficiency of the system. User experience is subjective in nature because it is about individual perception and thought with respect to the system. User experience is dynamic as it is constantly modified over time due to changing circumstances and new innovations.