External Identities

External Identities is a new public preview feature of Azure AD which allows external users to authenticate with a non-Microsoft account such as their Google or Facebook identity.  This has been available in Azure AD B2C for some time, but that solution is really targetted at highly customised applications with potentially millions of users.  External Identities opens up that idea to you ordinary Azure AD tenant so that any SAML or WS-Fed IdP can…