Exam AWS Certified Data Engineer - Associate DEA-C01 topic 1 question 130 discussion

https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-native-idp.html register the identity provider with Amazon Redshift, using SQL statements, which set authentication parameters that are unique to the identity provider.

Answer is A

Since the question is asking for "The first step", the correct answer is A. "First, you register Amazon Redshift as a third-party application with your identity provider, requesting the necessary API permissions" https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-native-idp.html

Why Option (A) is Correct Redshift Uses SAML at the Cluster Level To enable single sign-on with a SAML 2.0–compatible IdP (for example, Okta or Azure AD) for Redshift Query Editor, you register the IdP by uploading its SAML metadata in the Amazon Redshift console. This is done at the cluster configuration or security level—not “within” the database engine itself. Option (B): “Within Amazon Redshift” There is no direct command such as CREATE IDENTITY PROVIDER inside Redshift SQL. Federating a third-party IdP requires configuring the cluster to trust that IdP’s SAML metadata. That is done via the AWS console or CLI at the cluster level, not by running commands inside the database.

I have seen this official answer in the practical exam on the AWS Skills Builder website. Learn more https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-native-idp.html#redshift-iam-access-control-native-idp-setup

Redshift does not support directly registering the IdP "within" the service. The registration must be done through the cluster configuration settings.

o complete the preliminary setup between the identity provider and Amazon Redshift, you perform a couple of steps: First, you register Amazon Redshift as a third-party application with your identity provider, requesting the necessary API permissions. Then you create users and groups in the identity provider. Last, you register the identity provider with Amazon Redshift, using SQL statements, which set authentication parameters that are unique to the identity provider. As part of registering the identity provider with Redshift, you assign a namespace to make sure users and roles are grouped correctly.

https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-native-idp.html

To enable users to authenticate into the Amazon Redshift query editor using a third-party identity provider (IdP), the data engineer must first register that IdP within the configuration settings of the Redshift cluster itself. Amazon Redshift natively supports integrating with external identity providers to manage user authentication. By registering the third-party IdP directly in the Redshift cluster settings, it establishes the trust relationship needed for Redshift to rely on that IdP for authenticating users when they log into the query editor. Answer A