Today's users attention span is very short, so our applications need to be as real-time as possible. This talk wants to give you the tools to achieve that. As the title suggests, it's not about SignalR (it might be mentioned, but that's all). It will walk through native technologies like WebSockets, Server-Sent Events and Push API based notifications. It will show how to use them, compare them and suggest when to use which by exploring their strong and weak sides.