Bulk Update Azure AD for MFA

There;s an example on how to bulk enable/enforce MFA here: https://docs.microsoft.com/en-us/azure/multi-factor-authentication/multi-factor-authentication-get-started-user-states

As for populating authentication details, the following should (eventually, once they "merge" the data from SSPR/MFA) apply: https://docs.microsoft.com/en-us/azure/active-directory/active-directory-passwords-data

But not yet, so it's just for reference :)