Reactive applications are designed to handle asynchronous events in a way that maximizes responsiveness, resiliency, and elasticity. Reactive Extensions (Rx) is a library that abstracts away the sources of events and provides tools to handle them in a reactive way. With Rx, filtering events, composing event sources, transforming events, and dealing with errors all become much simpler than with traditional tools and paradigms. Reactive Extensions requires a change of mindset: you’ll learn to think about your application as a message hub that knows how to react to messages. After this session, you’ll better understand what Rx is, and you’ll have a starting point from which to effectively use it in your application.