Application requirements have changed significantly over the past 20 years and we’re now building software which has to handle potentially millions of users and billions of devices. The reactive manifesto is a set of common traits shared by applications capable of handling these new requirements. Akka is the canonical example of a toolkit for building such applications, but thanks to a team of dedicated developers, Akka has arrived on the CLR in the form of Akka.Net. This session looks at the key principles of Akka.Net and how using these you can build applications which handle potentially massive traffic.