Which feature is not a component of OCI Identity and Access Management service?

The correct choice is that Network Security Group is not a component of the OCI Identity and Access Management (IAM) service. The IAM service is focused on managing user identities, access control, and security within the Oracle Cloud Infrastructure environment. Its main components include user credentials, federations, and policies.

User credentials are essential for authenticating users and granting them access to OCI resources based on their roles and responsibilities. Federations enable users from external identity providers to access OCI without needing separate credentials, allowing for seamless integration with existing identity management solutions. Policies define the rules and permissions for users and groups, specifying who can access what resources and in what manner.

Conversely, a Network Security Group is part of OCI's networking services, specifically designed to control traffic to and from resources within a virtual cloud network. It focuses on network-level security rather than user identity and access management.

Understanding the distinctions between IAM components and other OCI services helps clarify how each component functions within the overall architecture of Oracle Cloud Infrastructure.