title: ASP.NET Core Web API + Azure AD Authentication
body: <p>I need some help with implementing authorization infrastructure for my application.</p>
  
  <p>I have a Angular SPA application that works with a Web API. This Web API in turns uses another Web API to serve its request. So, I  have totally 2 Web APIs and a Angular SPA application.</p>
  
  <p>I want the users of the Angular SPA application to be authenticated by our Azure AD account, and then share this token with other two Web APIs to authenticate the requests.</p>
  
  <p>Please advise how to go about it, any thoughts are much appreciated.</p>