Multi-Factor Authentication (MFA) is a critical security feature designed to protect user accounts and sensitive transactions by requiring more than one form of verification. This typically involves a combination of something the user knows (like a password), something the user has (like a mobile device or hardware token), and something the user is (biometric verification). By implementing MFA, organizations can significantly reduce the risk of unauthorized access and fraud, particularly in the context of crypto-to-fiat off-ramps where financial transactions are involved. This feature not only enhances security but also builds user trust and compliance with regulatory standards.