Microsoft Entra federation compatibility list
Microsoft Entra ID provides enhanced application access security for Microsoft 365 and other Microsoft Online services for hybrid and cloud-only implementations without requiring any third-party solution. Microsoft 365, like most of Microsoft’s Online services, is integrated with Microsoft Entra ID for directory services, authentication, and authorization.
IDP Validation
If your organization uses a third-party federation solution, you can configure single sign-on for your on-premises Active Directory users with Microsoft Online services, such as Microsoft 365, provided the third-party federation solution is compatible with Microsoft Entra ID. For questions regarding compatibility, please contact your identity provider. If you would like to see a list of identity providers who have previously been tested for compatibility with Microsoft Entra ID, by Microsoft, see Microsoft Entra identity provider compatibility docs.
Note
Microsoft no longer provides validation testing to independent identity providers for compatibility with Microsoft Entra ID. If you would like to test your product for interoperability please refer to these guidelines.