Which operation retrieves a credential report for an AWS account?

The operation that retrieves a credential report for an AWS account is referred to as GetCredentialReport. This command is specifically designed to provide a detailed report of all IAM users in the account, including information on their security credentials such as passwords and access keys.

Using this operation, administrators can gain insights into the security state of their AWS accounts, helping to identify users without MFA (Multi-Factor Authentication), users with access keys that are not rotated regularly, and other security-related issues. Having access to this report is critical for maintaining robust security practices and ensuring compliance with security policies.

The other operations mentioned do not directly provide the credential report. For example, listing users or describing reports may offer some information about IAM users or other resources, but they do not specifically focus on retrieving the comprehensive credential report that GetCredentialReport provides.