What does EC2 Reserved Instance size flexibility enable?

What does EC2 Reserved Instance size flexibility enable?

• A. Allows discounts across different families
• B. Prevents changes to the instance size during the term
• C. Allows discounts to apply to different size instances within the same family
• D. Requires the same instance size for the entire term

Answer: (C)

Size flexibility lets the Reserved Instance discount apply to different instance sizes within the same instance family, in the same region. This means you can scale up or down (within that family) and still receive the RI benefit without needing a new RI. For example, a Reserved Instance purchased for a certain size in a family can cover other sizes in that same family, rather than being tied to a single exact size. It does not apply across different families, and the term remains tied to the original RI. This is why the best choice is that discounts can apply to different size instances within the same family.

Size flexibility lets the Reserved Instance discount apply to different instance sizes within the same instance family, in the same region. This means you can scale up or down (within that family) and still receive the RI benefit without needing a new RI. For example, a Reserved Instance purchased for a certain size in a family can cover other sizes in that same family, rather than being tied to a single exact size. It does not apply across different families, and the term remains tied to the original RI. This is why the best choice is that discounts can apply to different size instances within the same family.