A cloud-based identity and access management service for securing user authentication and resource access
Thank you for posting this in Microsoft Q&A.
I understand you're inquiring about the possibility of providing external users access to your SAML-authenticated application.
Yes, it is possible to grant external users access to your application that uses SAML for authentication. One effective method is through Azure AD B2B collaboration.
In Azure AD, a SAML application is registered within a specific tenant, which means that only users from that tenant can access it. To enable users from other tenants to access your SAML application, you can invite them as guest users to your Azure AD tenant, thereby granting them access to the application.
For your reference: invite external users as guest users
Hope this helps. Do let us know if you any further queries.
Thanks,
Navya.
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