Invision is a great tool for creating interactive wireframes that allow everyone to collaborate, comment and contribute easily from all devices (mobile, tablet and desktop). Adding the wireframes to Invision allows for a streamlined agile approach allowing menus, click through and linked menus. It gives a very clear understanding of what the software product will do and how it will function. Having the ability to "interact" on this level gives stakeholders the ability to see further into the product and give insights and elegance into the product. In combination with persona mapping, user journeys and information architecture interactive wireframes give you the closest experience to using your app or software product before the heavy lifting starts (visual design and development). This gives your app or software product the biggest advantage before it heads to market letting all key stakeholders having maximum input and leveraging the most success towards your product.