What is MFA and does my small business need it?

Understanding MFA
Multi-factor authentication (or two-factor authentication, abbreviated as 2FA) is an online security layer that requires an additional credential when logging into an account or system. This can include something the user knows (like a PIN), something the user owns (like a phone or key card), or something the user is (like biometric information). This additional layer of security makes it exponentially more difficult for anyone other than authorized users to access sensitive information on your systems.