When users sign into an application or service and receive an MFA prompt, they can choose from one of their registered forms of additional verification. Users can access My Profile to edit or
add verification methods. Enable more than one MFA method so that users have a backup method available in case their primary method is unavailable. Methods include:
- Windows Hello for Business
- Microsoft Authenticator app
- FIDO2 security key (preview)
- OATH hardware tokens (preview)
- OATH software tokens
- SMS verification
- Voice call verification
For more details about the method of verification, you could refer to: https://learn.microsoft.com/en-us/azure/active-directory/authentication/concept-mfa-howitworks
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