At Interaction Design, we start by thinking about concepts , writing scenarios, creating prototypes, and testing ideas. Participation by your development team and users provides many useful points of view. Collaboration with graphic designers, writers and others creates a complete design package.
Testing puts prototypes, sketches or finished code in front of real users to see how they react.
Finding problems early makes fixing them easier. A scenario describes users and how they will work with your product. Prototypes Mockups ranging from drawings to running code to illustrate the design. Talking with users, and marketing and other team members tells us how your customers will use a product. This is important information for QA, documentation, tech support and others.