Prototypes are attractive tools for customer experience teams because they expose design assumptions and drive ideation. They also help to communicate ideas, create consensus, and gather user feedback. Prototypes can range from sketches on a napkin to carefully rendered screen flows and visionary demonstrations of a concept or experience. Forrester recently spoke with six firms that offer tools to help customer experience teams create different types of prototypes. Before evaluating tools, customer experience professionals should consider their business need and the audience for their prototypes, after which they should determine the appropriate fidelity for the prototype and finally match their needs with the right tool.