User-Centered Design
Combined with prototyping, User-Centered Design is at the core of how we work. The more we keep the people at the center of any design problem the better the solution will be. The more we involve the actual users in the design process (as opposed to focus groups or theoretical users) the more effective the designs will be. In fact, I have noticed that the projects where the users are directly involved with the design process are also the ones that are the easiest to maintain and extend afterwards.
