title: How to implement Single Sign On (SSO) in angular 2 apps with Azure AD B2B
body: <p>I am building a portal that will group various angular 2 SPA apps. I need to sign in once in to the portal. After sign in all the angular 2 apps should work with signed in user context in new tabs.</p>
  
  <p>I am using Angular 2 + Oauth 2 and Azure AD B2B.</p>
  
  <p>How to share the user's context between two angular 2 apps.</p>