Let's write a web-app that can be pushed to in real-time from other users, survive offline and- oh darn that'll take us ages just to get the C#/Java/Node.js project set up! We'll need to select and install a SQL DB or a fancy document store too. And we'll need to either write or choose a library to sync data from the server to the browser in case the browser goes offline. Don't fret though, because with noBackend web apps we don't need no stinkin' server, we can write all our code for the browser! David will be live coding a collaborative drawing application that shows others drawing in real-time together with you. If you go offline you'll still be able to draw and when you reconnect your changes will be automatically synced back to the server. He'll do all this without ever writing a single line of server-side code.