[MFA](https://docs.microsoft.com/en-us/azure/active-directory/authentication/concept-mfa-howitworks) does not work with this project. Turns out if you are using Azure AD Premium you can use a [Conditional Access policy to apply an application exclusion](https://docs.microsoft.com/en-us/azure/active-directory/conditional-access/howto-conditional-access-policy-all-users-mfa#application-exclusions) (as pointed to in https://github.com/jimdigriz/freeradius-oauth2-perl/issues/11#issuecomment-723653101) to disable MFA for our application use case.. This ticket is to make it a TODO to explore and document this process; seems to be an AD Premium only feature but that is for the end use to decide.