The acronym SSO stands for Single Sign-On, which is an authentication process that allows users to access multiple applications or systems with one set of login credentials. This enhances user convenience by reducing the number of login attempts required while simultaneously improving security through centralized management of authentication. SSO solutions can streamline user experiences while minimizing the risk of password fatigue and potential breaches from weak or repeated passwords. By implementing SSO, organizations can enhance both user satisfaction and security compliance.