Apple’sPlatform Single Sign-On (Platform SSO)integrates macOS with modern cloud identity providers such as Microsoft Entra ID or Okta. A primary benefit documented in Apple Learning is the ability forlocal account credentials to remain synchronized with IdP credentials. This means when a user changes their password at the IdP, the same update flows automatically to their macOS account, preventing mismatched credentials. This eliminates the long-standing issue of password drift seen in older directory-bound workflows. Kerberos SSO is a legacy technology, and federated Managed Apple Accounts are tied to Apple Business Manager, not directly to Platform SSO. IdP passkey integration with iCloud Keychain is a separate security enhancement, not part of Platform SSO. The essential benefit is seamless credential synchronization across local accounts and IdPs.