SSO solutions simplify access to applications via single login, reducing security risks. However, modern work patterns and SaaS usage create challenges, leading to the “Access-Trust Gap.” Many apps remain unmanaged due to SSO costs, integration issues, and shadow IT, making widespread adoption impractical, especially for SMBs. SSO's limitations necessitate complementary solutions, like Extended Access Management (XAM), which offer comprehensive security for all app access. Effective application management and spend optimization are crucial for mitigating risks and controlling costs in today's decentralized workplace.
https://blog.1password.com/sso-isnt-complete-solution-for-saas-access-management/