SAP-C02 Question 338
Select 2A company is running multiple EC2 instances in their production and development environments. The production environment requires consistent capacity and is expected to run 24/7 for at least the next 3 years. The development environment has unpredictable workloads with instances running only during business hours. The company wants to optimize costs for both environments. Which pricing models should the company choose for the production and development environments?
- A
Use Reserved Instances for the production environment and On-Demand Instances for the development environment.
- B
Use Savings Plans for the production environment and Spot Instances for the development environment.
- C
Use Reserved Instances for the production environment and Spot Instances for the development environment.
- D
Use Savings Plans for the production environment and On-Demand Instances for the development environment.
- E
Use On-Demand Instances for both the production and development environments.
Show answer and explanation
Correct answers: A, D
Explanation
To optimize costs, the production environment should use Reserved Instances or Savings Plans, as both options are designed for predictable, long-term workloads. Reserved Instances offer a fixed commitment, while Savings Plans provide more flexibility. For the development environment, On-Demand Instances are the best choice since they cater to unpredictable workloads without requiring long-term commitments. Spot Instances, while cost-effective, are not reliable for workloads that need consistent availability.
- A. Correct.
This is a correct answer because Reserved Instances provide the best cost optimization for workloads that run 24/7 for an extended period, such as the production environment. On-Demand Instances are suitable for unpredictable workloads like the development environment.
- B. Incorrect.
This is incorrect because while Savings Plans are flexible, Spot Instances are not suitable for unpredictable workloads that need consistent availability, as they can be interrupted by AWS at short notice.
- C. Incorrect.
This is incorrect because Spot Instances are not ideal for development environments with unpredictable workloads that need consistent availability. Reserved Instances are suitable for the production environment but not for sporadic development workloads.
- D. Correct.
This is a correct answer because Savings Plans provide flexibility and cost savings for consistent production workloads. On-Demand Instances are a good fit for the development environment due to its unpredictable nature.
- E. Incorrect.
This is incorrect because On-Demand Instances are not cost-effective for the production environment, where workloads are consistent and long-term.