What is the primary purpose of multi-factor authentication (MFA)?

The primary purpose of multi-factor authentication (MFA) is to provide a secure method of verifying user identity. MFA adds an extra layer of security by requiring users to present two or more independent credentials for authentication. These credentials can include something the user knows (like a password), something the user has (such as a smartphone or security token), or something the user is (like a fingerprint or retinal scan).

This approach significantly enhances security because even if one factor, such as a password, is compromised, unauthorized access is still prevented until the additional factors are validated. By using more than one method of verification, MFA helps to ensure that the person attempting to access an account is indeed the legitimate user.

The other options do not align with the core intent of MFA. Allowing multiple users to authenticate at once does not relate to validating individual identities securely. Prioritizing speed over security diminishes the primary goal of authentication processes. Lastly, while reducing password dependency can be a secondary benefit of some MFA implementations, it is not the main purpose of MFA itself. The focus remains on creating a robust verification process to protect sensitive information and systems.