The Azure Active Directory (Azure AD) enterprise identity service from Microsoft that provides single sign-on and multi-factor authentication. Official AzureAD website.
When you specify callback URL in AzureAD settings use openidcallback.asp file name. For instance, if your project resides at https://website.com/myproject, the callback URL will be https://website.com/myproject/openidcallback.asp.
Security screen articles:
•CAPTCHA on authentication pages
See also: