- Recent advances in mobile, ubiquitous, social, and tangible computing technologies have moved human-computer interaction (HCI) into practically all areas of human activity. This has led to a shift away from usability engineering to a much richer scope of user experience, where user's feelings, motivations, and values are given as much, if not more, attention than efficiency, effectiveness and basic subjective satisfaction (i.e. the three traditional usability metrics). 
- In website design, it was important to combine the interests of different stakeholders: marketing, branding, visual design, and usability. Marketing and branding people needed to enter the interactive world where usability was important. Usability people needed to take marketing, branding, and aesthetic needs into account in web-site design. User experience provided a platform to cover the interests of all stakeholders: making web sites easy to use, valuable, and affective for visitors. This is why several early user-experience publications focus on web-site user experience.
The field of user experience was established to cover the holistic perspective to how a person feels about using a system. The focus is on pleasure and value rather than on performance. The exact definition, framework, and elements of user experience are still evolving.