Multi-factor authentication enhances security by requiring users to provide two or more verification factors to gain access to an account or system. This security measure combines something the user knows (like a password), something they possess (such as a smartphone or security token), and something unique to them (like a fingerprint or facial recognition). By implementing multi-factor authentication, organizations significantly reduce the risk of unauthorized access, as attackers would need to compromise multiple factors to succeed. This layered security approach strengthens overall data protection and minimizes the likelihood of breaches.