Hello Banerjee, Somdutta,
Thanks for your question.
SAML exchanges occur over HTTPS to protect data in transit.
The process generally involves a SAML request and response. It generates a SAML authentication request and redirects the user to the identity provider after which the provider authenticates the user and gets a response.
This is documented in detail here:
https://learn.microsoft.com/en-us/entra/architecture/auth-saml?source=recommendations
With the Entra SSO integration with AWS IAM Identity here:
Please let me know if you have further questions**
You can mark it 'Accept Answer' if this helped.