Which of the following provides the ability to share the cost benefits of Reserved Instances across AWS accounts?
A . AWS Cost Explorer between AWS accounts
B . Linked accounts and consolidated billing
C . Amazon Elastic Compute Cloud (Amazon EC2) Reserved Instance Utilization Report
D . Amazon EC2 Instance Usage Report between AWS accounts
Answer: A
Explanation:
The way that Reserved Instance discounts apply to accounts in an organization’s consolidated billing family depends on whether Reserved Instance sharing is turned on or off for the account. By default, Reserved Instance sharing for all accounts in an organization is turned on. You can change this setting by Turning Off Reserved Instance Sharing for an account.
The capacity reservation for a Reserved Instance applies only to the account the Reserved Instance was purchased on, regardless of whether Reserved Instance sharing is turned on or off.
Reference: https://aws.amazon.com/premiumsupport/knowledge-center/ec2-ri-consolidated-billing/
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