A functional prototype is an early version of a software application that includes some or all of the core functionalities intended for the final product, allowing developers and stakeholders to test and validate these features in a real-world context. Unlike other types of software prototypes, such as [[mockup prototype|mockups]] or wireframes, which focus primarily on design and layout without interactive elements, or a proof-of-concept prototype that demonstrates feasibility without full functionality, a functional prototype emphasizes the operational aspects of the software. This type of prototype is particularly useful for identifying issues related to user experience, performance, and integration with other systems before committing to full-scale development. By providing a working model that stakeholders can interact with, it facilitates more informed feedback and iterative improvements.