How can you control access to OCI resources?

Controlling access to OCI (Oracle Cloud Infrastructure) resources is primarily accomplished through Identity and Access Management (IAM) policies. IAM provides a robust framework that allows you to define who can access specific resources and what actions they can perform. By leveraging IAM, you can create fine-grained access control through policies that specify permissions for users, groups, or compartments.

These policies can include various actions such as allowing a user to launch a virtual machine or access storage resources, ensuring that access is limited to authorized users only. This method of access control aligns well with best practices for security and compliance, as it enables organizations to enforce least privilege access effectively.

Other options, while they may relate to resource management, do not directly address the comprehensive capability of controlling access in a robust manner. For instance, virtual network configurations primarily manage network traffic and do not determine user permissions. Creating user accounts is a part of identity management but does not dictate the permissions associated with those accounts. Manual resource assignments might imply some level of access control, but they lack the structured approach provided by IAM policies, making it a less effective method for managing access appropriately across a dynamic cloud environment.