The document discusses .NET Core 3.0 and its capabilities running on Raspberry Pi. It provides an overview of .NET Core 3.0 highlights from the .NET Conf including support for Raspberry Pi and ARM 64. It then covers installing .NET Core on Raspberry Pi and demos a simple console app, an LED app using GPIO, a button app, and an Azure IoT Hubs app. It concludes with an introduction to Blazor for building web UIs with C#.