Part 1: In this stream, we start building a Microsoft Outlook application using Prism for WPF and Infragistics controls. We start out by creating a new Prism application, we setup our shell, and add a few module projects. We then see how we can create custom region adapter for both the XamOutlookBar and XamRibbon controls and register them with Prism. We inject a few dummy views into these regions to verify their functionality, and have some great discussions about Prism, DI containers, .NET Core 3, and more.