At SpareBank1, Norway's second largest bank, we've used React in production for about two years. This past year we've introduced both React and Redux to the largest branch of the organization - the online banking app for desktop. This means writing all new features in React, and gradually re-writing our old pages as their near their end-of-life. The interesting part is how we've lifted our frontend collaboration to the organizational level. We've created a shared component library - meaning hundreds of npm modules containing all you need to create a large and modern SPA. This includes having an automatically updated design guide utilizing these components, also serving as a platform for discussion between frontend devs, graphical and interaction designers. Having close to 150 developers and designers working together across 20+ teams and application - really is frontend at scale. This talk can be seen as a natural continuation of my 2015 ReactJS Day talk "How We Used React To Tame The SPA Beast", although having seen it is definitely not a requirement.