SAP-C02 Question 341
Select 2A company is running multiple workloads on Amazon EC2 instances across various regions. The workloads have different usage patterns: some instances run 24/7 for mission-critical applications, while others are used sporadically for development and testing. The company wants to optimize its EC2 costs while maintaining flexibility for the development workloads. What pricing model or combination of pricing models should the company choose?
- A
Purchase Reserved Instances for the mission-critical workloads and use On-Demand Instances for development workloads.
- B
Use Savings Plans for the mission-critical workloads and On-Demand Instances for development workloads.
- C
Use Savings Plans for both mission-critical and development workloads.
- D
Use Reserved Instances for all workloads to achieve the highest cost savings.
- E
Use Spot Instances for mission-critical workloads and On-Demand Instances for development workloads.
Show answer and explanation
Correct answers: A, B
Explanation
The company has two distinct workload types: predictable mission-critical workloads and sporadic development workloads. For mission-critical workloads, Savings Plans or Reserved Instances are cost-effective options, but Savings Plans provide more flexibility. For development workloads, On-Demand Instances offer the necessary flexibility without long-term commitments. Combining Savings Plans for predictable workloads and On-Demand Instances for sporadic workloads ensures cost optimization while meeting usage requirements.
- A. Correct.
This is a valid option because Reserved Instances are well-suited for predictable, 24/7 workloads like mission-critical applications. On-Demand Instances are appropriate for sporadic workloads like development and testing, as they provide flexibility without long-term commitments.
- B. Correct.
Savings Plans are a better choice for mission-critical workloads because they offer similar discounts to Reserved Instances but provide more flexibility in terms of instance types and regions. On-Demand Instances remain the best option for sporadic development workloads.
- C. Incorrect.
Using Savings Plans for both workloads is not the best option because development workloads are sporadic and unpredictable. Committing to Savings Plans for these workloads could lead to underutilization and additional costs.
- D. Incorrect.
Reserved Instances for all workloads might achieve higher cost savings for predictable workloads, but it lacks the flexibility required for sporadic development workloads. This approach could lead to unnecessary spending on unused capacity.
- E. Incorrect.
Spot Instances are not suitable for mission-critical workloads because they can be interrupted at any time. While they provide the lowest cost, they are better suited for workloads that are fault-tolerant. On-Demand Instances are still appropriate for development workloads.