You have started to hear about micro-services, evented asynch servers, and WebSockets but then you hear the only platform that really has those now is Node.JS. While you like JavScript you would like to use other languages. Well Vert.x has all these features AND runs JavaScript, Java, Scala, Python, Ruby, CoffeeScript, and Groovy. You don't have to be a Node.JS hipster to have all the fun - though JavaScript is fine if you roll that way. This talk will cover a basic introduction to Vert.x and it's architecture. Then I will will show how I built a WebSocket asset tracking application with Leaflet and a Vert.x backend application. The goal is at the end you can go home and start writing your own, scalable, (a)synchronous, WebSocket applications.