The field of user experience centers on the idea that we must design products around people, rather than teaching people how to use products: user-centered design (UCD), not technology-centered design. In order to do so, we must understand people—their behaviors, attitudes, needs, and goals. Whether the final product is a website, software application, mobile app, or interactive kiosk, a user-centered design can only be achieved if we know who is going to use it and if that knowledge informs our design. An entire arsenal of user-research methods can be employed to achieve a user-centered design. Personas are yet another tool that can be used to encourage decisions based on a real person’s needs, and not on those of a generic and undefined “user.” (nngroup.com)