Single Sign-On (SSO) is an authentication solution that enhances security while providing a seamless user experience. By enabling users to log in once and access multiple applications, SSO reduces password fatigue, minimizes credential-based security risks, and improves IT efficiency. Organizations benefit from centralized identity management, faster onboarding, and better compliance with security policies. However, SSO can become a single point of failure if not properly protected. To mitigate risks, businesses should enforce Multi-Factor Authentication (MFA), implement role-based access controls (RBAC), and use real-time threat detection to ensure secure and efficient authentication processes.