AWS Certified Security – Specialty (SCS-C02) — Question 241

A company uses AWS Organizations to manage a small number of AWS accounts. However, the company plans to add 1,000 more accounts soon. The company allows only a centralized security team to create IAM roles for all AWS accounts and teams. Application teams submit requests for IAM roles to the security team. The security team has a backlog of IAM role requests and cannot review and provision the IAM roles quickly.

The security team must create a process that will allow application teams to provision their own IAM roles. The process must also limit the scope of IAM roles and prevent privilege escalation.

Which solution will meet these requirements with the LEAST operational overhead?

Answer options

• A. Create an IAM group for each application team. Associate policies with each IAM group. Provision IAM users for each application team member. Add the new IAM users to the appropriate IAM group by using role-based access control (RBAC).
• B. Delegate application team leads to provision IAM roles for each team. Conduct a quarterly review of the IAM roles the team leads have provisioned. Ensure that the application team leads have the appropriate training to review IAM roles.
• C. Put each AWS account in its own OU. Add an SCP to each OU to grant access to only the AWS services that the teams plan to use. Include conditions in the AWS account of each team.
• D. Create an SCP and a permissions boundary for IAM roles. Add the SCP to the root OU so that only roles that have the permissions boundary attached can create any new IAM roles.

Correct answer: D

Explanation

Option D is correct because it limits the creation of IAM roles to only those that adhere to the defined permissions boundary, ensuring both control and security. Option A introduces unnecessary user management overhead, while Option B relies on periodic reviews that may not address immediate needs. Option C focuses on service access rather than the specific role-creation requirements, making it less suitable for the scenario.