We can define user experience design as:
- the process of specifying the message, tools, services, people, scripts, and environments to support users in their efforts to carry out their intents;
- the process of specifying how user are treated by the products, messages people, environments, smells, tastes, and so on, how they encounter while subscribing to brand;
- an approach that focuses on the results of product consumption versus on the product itself;
- the design of something you can do, rather than something done to you;
- product development elevated to the scale of brand;
- a design effort that includes the connections and relationships between the designed artifacts versus the design of just the artifacts themselves.
Digital product design can be placed within more general discipline of user experience design, and in turns subdivides it into the related disciplines of
- interaction design;
- information architecture;
- user-interface design; and
- appearance design.
Seven distinctive, yet overlapping, pillars of the experiential interaction design can be identified as:
- metaphor (what the user-interface resembles)
- mental model (its organization)
- navigation (finding and displaying)
- interaction (input/output sequences)
- appearance (look & feel)
- information (content or data the product has)
- functionality (work the product can do)
Excerpt from: From user interface to über-interface: a design discipline model for digital products, by John Armitage, EC Wise Inc.