Update README.md

Author: AdrienTorris

README.md

@@ -208,6 +208,7 @@ To get started with Blazor, follow the instructions in the [Blazor Get Started](
 
 ## Tutorials
 * [Blazor workshop](https://github.com/dotnet-presentations/blazor-workshop/) - ![GitHub stars](https://img.shields.io/github/stars/dotnet-presentations/blazor-workshop?style=flat-square&cacheSeconds=604800&logo=microsoft) Blazor app building workshop by [.NET Foundation](https://www.dotnetfoundation.org/), Blazzing Pizza.
+* [Create a Blazor Server app that uses the Microsoft identity platform for authentication](https://docs.microsoft.com/en-us/azure/active-directory/develop/tutorial-blazor-server) - October 2020 - Tutorial by Microsoft. Blazor Server provides support for hosting Razor components on the server in an ASP.NET Core app. In this tutorial, you learn how to implement authentication and retrieve data from Microsoft Graph in a Blazor Server app with the Microsoft identity platform.
 * [Tour of Heroes in Blazor Wasm Playlist](https://www.youtube.com/playlist?list=PLdwMmKbrXPesoZoRgpO2xaoFuOclteZI7) - August 2020 - Using .Net 5 and Blazor WASM to create the Tour of Heroes app with the addition of how to create Unit Tests with bUnit. This tutorial counts 9 videos on YouTube.
 * [Yahtzee in Blazor WebAssembly](https://exceptionnotfound.net/yahtzee-in-blazor-webassembly-part-1-the-csharp-model/) - August 2020 - Tutorial by Exception Not Found. [Part 1: the C# model](https://exceptionnotfound.net/yahtzee-in-blazor-webassembly-part-1-the-csharp-model/). [Source code](https://github.com/exceptionnotfound/BlazorGames) ![stars](https://img.shields.io/github/stars/exceptionnotfound/BlazorGames?style=flat-square&cacheSeconds=604800) ![last commit](https://img.shields.io/github/last-commit/exceptionnotfound/BlazorGames?style=flat-square&cacheSeconds=86400).
 * [Build a video portal with Blazor](https://blazor.pticostarica.com/) - August 2020 - Website contains videos about building a video portal with Blazor.