We dive into the HTTP client stack and learn how to access a cloud service from our Metro app, how to authenticate with a service using the WebAuthenticationBroker, and how to work with syndicated content using the new Syndication and AtomPub APIs. We explore Windows 8 background transfers, and learn how to control them, track them and reconnect to them across Metro lifecycle events from our foreground app. We discuss Windows live tiles and toast notifications, and how they keep our apps alive and connected. And finally we take a serious look at the push notification architecture, and the way push features can light up our app, for example by leveraging tile and toast updates to it. This course assumes basic familiarity with the Windows 8 platform, XAML UIs and the C# async pattern.