User experience (UX) covers all parts of people's interactions with a company, its services and its products. It also engages with the objectives, functions, capabilities and processes, which influence project delivery teams, as they work on delivering better experiences.
Where usability covers how easy to learn, efficient, and easy to use, an interface is, UX is broader concept. It involves having a deep understanding of audiences, their needs, values, abilities, and also their limitations. As a general indicator, good user experiences are:
Useful: meet a need
Usable: are easy to use
Desirable: create positive feelings
Findable: are easy to browse and navigate
Accessible: can be used by as many people as possible
Credible: are trustworthy