MFA is a security feature that requires more than one method of authentication. You can use it to add an additional layer of security to the signing in of users. It enables two-step verification, where the user first signs in using something they know (such as a password), and then signs in with something they have (such as a smartphone), or some human characteristic (such as biometrics).
Azure MFA maintains simplicity for users, but also helps to keep data and applications safe by providing additional security and requiring a second form of authentication. It offers a variety of configuration methods set by an administrator that determines whether users are challenged for MFA or not.
Azure MFA is part of the following ...