I'll tell the story of the little enterprise app that wanted to be hip. It fled the scary realm of the SharePoint server and moved its code to the browser. The app could talk to SharePoint when it wanted, on its own terms. Finally, it felt it could breathe again and its web devs could throw all their magic spells without fear of retaliation. The application architecture is MVVM. It is built with 9 models and 7 view-models, which means it is large enough to be interesting, while being small enough for demonstrating inner-workings and details. I will discusspros and cons of the architecture, lessons-learned on performance, testing and benefits of using SharePoint as a platform for enterprise apps.