What product design is — UX, UI and the map of the discipline
- UX is the whole experience over time; UI is the surface where interaction happens. One contains the other.
- Product design adds business outcomes to UX: a product designer is accountable for whether the thing works commercially, not only for whether it is usable.
- Job titles vary wildly between companies; the underlying skills — research, structure, interaction, visual, communication — do not.
Ask five companies what a “product designer” does and you will get five overlapping but different answers. That is fine — the titles are marketing; the disciplines underneath are stable.
User experience (UX) is everything a person experiences with a product or service over time: finding it, onboarding, daily use, failures, support, leaving. Don Norman coined the term at Apple precisely because “interface” was too narrow.
User interface (UI) is the surface through which the interaction happens — screens, components, typography, motion. UI design is part of UX the way cooking is part of running a restaurant: essential, visible, and not the whole job.
Product design is UX design with a P&L attached. A product designer is expected to connect user needs with business outcomes — to ask not only “is this usable?” but “should we build this at all, and how will we know it worked?” This is why metrics and research are core tracks on this site, not electives.
The skill map
Wherever you work, the same skill families keep appearing: research (understanding people), information architecture (structuring the product), interaction design (behavior over time), visual design (form and hierarchy), content design (words), and communication (making all of the above survive contact with a team). The tracks on this site map to these families.
Try it: write down your current strongest and weakest family from the list above. The recommended track order assumes research and foundations first — adjust it to attack your weakest area early.
- NN/g — The Definition of User Experience (UX)
- Norman & Nielsen — original UX definition note