Explanation
With the sign-ins activity report in the Azure portal, you can get the information you need to determine how your environment is doing.
The sign-ins report can provide you with information about the usage of managed applications and user sign-in activities, which includes information about multi-factor authentication (MFA) usage. The MFA data gives you insights into how MFA is working in your organization References:
https://docs.microsoft.com/en-us/azure/active-directory/authentication/howto-mfa-reporting