UX/UI
Definition
UX (user experience) is defined in ISO 9241-210 as a person's perceptions and responses resulting from the use or anticipated use of a system, product or service. UI (user interface) refers to the interface through which people interact with the system. Both are related but not the same.
UX describes how an application feels and how easily tasks can be completed with it. UI describes the interface through which users interact with the application. Together they influence whether a system is accepted.
How it works
- UX work clarifies context of use, goals and requirements and tests designs with real users.
- UI design defines layout, controls, typography and interface states.
- ISO 9241-11 defines usability through effectiveness, efficiency and satisfaction in a specified context of use.
Why it matters in practice
An attractive interface alone does not ensure good use; processes and content must fit the context.
Accessibility is part of good UX and UI.
Example from business
Fictional example: A team tests a form with five people and finds that a required field is misunderstood. The label and error message are then adjusted.
Limits and pitfalls
- Reducing UX to visuals.
- Deciding without testing with real users.
- Treating accessibility separately from design.
Frequently asked questions
Is UX the same as usability?
No. Usability describes fitness for use; UX also covers perceptions before, during and after use.
How does it differ from generative UI?
Generative UI refers to interfaces generated by AI at runtime; UX/UI describes the general disciplines.
Sources
Editorially reviewed on: