CLF-C02 Question 289
Single answerA company has purchased a Reserved Instance (RI) within their AWS Organization to reduce costs for their EC2 workloads. Which of the following statements about Reserved Instance behavior in an AWS Organization is correct?
- A
Reserved Instances automatically apply across all accounts in the AWS Organization, regardless of account settings.
- B
Reserved Instances can only apply to the account that purchased them and cannot be shared with other accounts in the Organization.
- C
Reserved Instances are shared across accounts within the Organization if they are purchased in a management account and sharing is enabled.
- D
Reserved Instances can only apply to workloads within the same Availability Zone as the original purchase.
Show answer and explanation
Correct answer: C
Explanation
Reserved Instances can reduce costs for EC2 workloads and provide flexibility across accounts within an AWS Organization. However, for sharing to work, the RI must be purchased in the management account, and sharing must be enabled at the Organization level. This ensures that the cost benefits of RIs are distributed across eligible workloads within the Organization.
- A. Incorrect.
Incorrect. Reserved Instances do not automatically apply across all accounts in an AWS Organization. Sharing must be enabled at the Organization level for RIs to be shared.
- B. Incorrect.
Incorrect. Reserved Instances can be shared across accounts within an AWS Organization if sharing is enabled. They are not limited to the purchasing account.
- C. Correct.
Correct. Reserved Instances can be shared across accounts in the Organization, but only if they are purchased in the management account and sharing is explicitly enabled in the Organization settings.
- D. Incorrect.
Incorrect. Reserved Instances are flexible enough to apply to workloads across Availability Zones in certain cases (e.g., Regional Reserved Instances), so this statement is not entirely accurate.