Prototypes allow you to test your ideas and create something as close to the real end-product as possible. It will enable you to share a useful experience with the team to verify alignment, test for usability issues, or even get first impressions from your target audience. The time spent at the beginning of a project building a prototype pays dividends throughout the product development process. It highlights potential problem areas with the user’s experience, provides details to the developers that make the application easier to build, aides in the QA process, and ultimately saves time and money. Making changes to a prototype is significantly cheaper and faster than making changes to a complete application.