How to provide Federated authentication with Tenant's corporate IdP using Cognito user pool

问题

1. It's a multi-tenant B2B SaaS application. How can I provide the Ability to provide Federated authentication with Tenant's corporate IdP for some tenants only if they choose to? For other tenants, basic UN/Password flow is required.

2. Do I need to use a pool per tenant or a common pool should work here?

3. Also, I am not planning to use the Identity pool but only the user pool as we do not need to give direct access to AWS resources.

来源：https://stackoverflow.com/questions/65621664/how-to-provide-federated-authentication-with-tenants-corporate-idp-using-cognit