Single Sign-On (SSO) and Multi-Factor Authentication (MFA) are both authentication mechanisms, but they serve different purposes:

Security Focus: MFA enhances security by requiring multiple forms of verification, making unauthorised access more difficult. In contrast, SSO streamlines the authentication process by allowing users to access multiple applications with a single set of credentials, which can pose risks if the identity provider is compromised.

User Experience: SSO improves user convenience by reducing the need to remember multiple passwords, thereby enhancing productivity.