AWS Certified Cloud Practitioner (CLF-C02)Billing, Pricing, and SupportMedium
A financial services firm has variable but predictable long-term compute needs and wants to change instance families or regions over the next three years while still receiving a significant discount compared to On-Demand pricing. Which Reserved Instance type best fits this need?
- AConvertible Reserved Instances
- BZonal Reserved Instances
- CStandard Reserved Instances
- DScheduled Reserved Instances
Show answer & explanationAnswer & explanation
Correct answer: A. Convertible Reserved Instances
Convertible Reserved Instances allow customers to change instance families, operating systems, and tenancies during the term in exchange for a somewhat lower discount than Standard RIs, making them ideal when future needs may shift. Standard RIs offer a bigger discount but cannot be modified across instance families.
Why the other options are wrong
- B. There is no distinct 'Zonal Reserved Instance' product; this is a distractor term.
- C. Standard RIs offer the highest discount but lock in instance family, limiting flexibility.
- D. Scheduled Reserved Instances are not a current AWS RI offering.
Convertible Reserved Instances
A Reserved Instance type that allows exchanging attributes like instance family during the term for a smaller discount than Standard RIs.
- 1 or 3-year terms
- Can exchange for different instance types
- Lower discount than Standard RI but more flexible
Memory trick: Convertible = Change it up