Implementing multi-factor authentication (MFA) is significant as it adds an extra layer of security to the authentication process. By requiring users to provide two or more verification factors—such as something they know (password), something they have (a mobile device), or something they are (biometric)—MFA reduces the likelihood of unauthorized access. This is particularly critical as cyber threats grow more sophisticated, making it much harder for attackers to compromise accounts without multiple forms of verification. As a result, MFA enhances overall security posture.