Duo Multi-Factor Authentication is an identity and access management solution that provides an additional layer of security beyond passwords. The product implements multi-factor authentication to verify user identities before granting access to applications and systems. The solution is designed to protect against unauthorized access by requiring users to provide multiple forms of verification during the authentication process. This typically includes something the user knows (password) combined with something the user has (mobile device, security token) or something the user is (biometric data). Duo MFA can be deployed across various environments to secure access to cloud applications, on-premises systems, VPNs, and other resources. The authentication process is intended to prevent credential-based attacks and reduce the risk of account compromise. The product operates as a cloud-based service that organizations can implement to enforce authentication policies across their user base. It supports various authentication methods and can be configured to meet different security requirements based on organizational needs. Note: The provided page content shows a 404 error page, indicating the specific product page was not accessible. This description is based on general knowledge of Duo's multi-factor authentication product offering.