Is anyone using AWS Cognito with SiteMinder?
There is no AWS Cognito runbook available for Siteminder. Therefore, I doubt this is supported.
You can check with SSO product manager mehhe02 if this is supported. If we are supported the integration, I expect a documentation (ie: runbook) detail how we can achieve.
For integration with SiteMinder, you better ask AWS directly. On their site, they mention possibleintegration with SiteMinder, but this is them to explain how it should be integrated as IdP.
Further reading :