Session from http://futureofwebapps.com/london-2013/
"We all know the benefits of adding realtime interactive functionality to our web apps, right? But with so many realtime web technologies available how do you know which ones to use in your new or existing web app? Phil will explain why adding realtime data and interactive functionality to your web app is beneficial (just in case you don't know). We'll then take a brief tour of the history of realtime web technologies in order to understand how we got where we are today before diving in to what realtime web solutions are available, and the key points you should consider, when building a web application on some of the most common technology stacks."