What is Azure Multi-Factor Authentication?

Azure Multi-Factor Authentication (MFA) is a Microsoft service that provides an extra layer of security when users sign in. It requires users to verify their identity using multiple factors, such as something they know (password) and something they have (a code sent to their phone or authenticator app). This helps prevent unauthorized access, even if a password is compromised. It is commonly used to protect access to cloud applications, on-premises resources, and VPNs.