Wire-frames are useful in the preparation of mock-ups and are also helpful in the process of developing your Minimum Viable Product. Wireframes are the output of choice for interaction designers and product managers, because it allows them to easily and quickly draw a page schematic or screen blueprint that represents the skeletal framework of the application or any part of it. Wireframes enable developers to envision not only how the product works but also gives them the opportunity to explain any perceived user flows at the design stage.