AWS Certified Solutions Architect - Associate
Get started today
Ultimate access to all questions.
Deep dive into the quiz with AI chat providers.
We prepare a focused prompt with your quiz and certificate details so each AI can offer a more tailored, in-depth explanation.
A company has an application that is running on Amazon EC2 instances. A solutions architect has standardized the company on a particular instance family and various instance sizes based on the current needs of the company.
The company wants to maximize cost savings for the application over the next 3 years. The company needs to be able to change the instance family and sizes in the next 6 months based on application popularity and usage.
Which solution will meet these requirements MOST cost-effectively?
Other
Community
UAnonymous
A
Compute Savings Plan
B
EC2 Instance Savings Plan
C
Zonal Reserved Instances
D
Standard Reserved Instances
Explanation:
Explanation
Correct Answer: A. Compute Savings Plan
Why Compute Savings Plan is the best choice:
-
Flexibility: Compute Savings Plans offer the highest level of flexibility among AWS cost-saving options. They allow you to change:
- Instance family
- Instance size
- Operating system
- Tenancy
- AWS Region (within the same AWS account)
-
Cost savings: Compute Savings Plans provide the same discount level as Convertible Reserved Instances (up to 66% savings) but with much greater flexibility.
-
Meets the specific requirements:
- 3-year commitment: The company wants to maximize savings over 3 years
- Flexibility to change instance family/sizes in 6 months: Compute Savings Plans allow this flexibility immediately, not after 6 months
- Cost-effectiveness: Provides maximum savings while maintaining flexibility
Why other options are not optimal:
-
B. EC2 Instance Savings Plan: While offering good discounts (up to 72%), these are less flexible than Compute Savings Plans. EC2 Instance Savings Plans lock you to:
- A specific instance family (e.g., M5, C5)
- A specific AWS Region
- You cannot change instance families, only sizes within the same family
-
C. Zonal Reserved Instances: These offer the least flexibility. They are tied to:
- Specific instance type
- Specific Availability Zone
- Specific tenancy
- No ability to change instance families or sizes
-
D. Standard Reserved Instances: Similar limitations to Zonal RIs but without the AZ lock-in. Still tied to:
- Specific instance type
- Specific Region
- Specific platform/OS
- No flexibility to change instance families
Key AWS Cost Optimization Concepts:
- Compute Savings Plans: Most flexible, apply to EC2, Fargate, and Lambda usage
- EC2 Instance Savings Plans: Less flexible but higher discounts for specific instance families
- Reserved Instances: Least flexible but predictable costs
Recommendation: For companies needing flexibility to adapt to changing application needs while maximizing long-term savings, Compute Savings Plans are the optimal choice.
Comments
Loading comments...