Question #964
A company is deploying temporary data processing workloads on AWS for a duration of 4 to 8 months. The workloads require uninterrupted availability but no long-term financial commitment. Which pricing model aligns best with these requirements?
Use Savings Plans with a 1-year term.
Use Spot Instances for cost savings.
Purchase Convertible Reserved Instances.
Use On-Demand Instances.
Explanation
The correct answer is D. Use On-Demand Instances.
Why D is correct:
- No long-term commitment: On-Demand Instances are pay-as-you-go, aligning with the requirement to avoid financial commitments beyond the 4-8 month workload duration.
- Uninterrupted availability: On-Demand Instances are not interrupted (unlike Spot Instances), ensuring consistent uptime.
Why other options are incorrect:
- A. Savings Plans (1-year term): Requires a 1-year commitment, which exceeds the 8-month workload duration.
- B. Spot Instances: Risk of interruption due to fluctuating capacity, violating the requirement for uninterrupted availability.
- C. Convertible Reserved Instances: Requires a 1-year or 3-year term, conflicting with the 'no long-term commitment' requirement.
Key Points:
- Use On-Demand for short-term, interruption-free workloads.
- Avoid Savings Plans/Reserved Instances for durations shorter than their terms.
- Avoid Spot Instances when uptime is critical.
Answer
The correct answer is: D