Hi @M, Akhil
Thank you for sharing your issue on Microsoft Q&A.
I Understand that you want to set up SSO with 10–20 users for both prod and non-prod tenants. Given the restriction of supporting a single IdP, using Microsoft Entra ID together with B2B Collaboration is the best way to integrate SSO with a third-party SaaS application in a multi-tenant architecture in this scenario. This method is especially useful for small user bases because it provides administrators and users with a simplified experience.
If you have any further questions or need additional assistance, please let us know. We're here to help!
Best regards,
Harshitha Eligeti.