Question #1420
A business operates a continuously running Amazon EC2 workload on AWS 24/7. They need to use the same instance family and type for the next year to maintain performance consistency.
Which purchasing options should they select to achieve the HIGHEST cost savings? (Choose two.)
Convertible Reserved Instance
Compute Savings Plan
All Upfront payment
Spot Instance
Standard Reserved Instance
Explanation
The correct answers are C (All Upfront payment) and E (Standard Reserved Instance). Here's why:
- Standard Reserved Instances (E) offer the highest discount (up to 72%) for long-term commitments when the instance type and family remain unchanged, which aligns with the requirement.
- All Upfront payment (C) maximizes savings by paying the entire cost upfront, providing the largest discount compared to Partial or No Upfront options.
Other options are less optimal:
- Convertible RIs (A) offer lower discounts and are designed for flexibility, which isn't needed here.
- Compute Savings Plans (B) provide flexibility across instance families but slightly lower savings (up to 66%) compared to All Upfront RIs.
- Spot Instances (D) are unsuitable due to potential interruptions, making them unreliable for 24/7 workloads.
Key Points: Use Standard RIs with All Upfront payments for maximum savings when instance requirements are fixed long-term.
Answer
The correct answer is: CE