Question #1227
A company aims to optimize its Amazon EC2 instances for cost efficiency while minimizing management effort. Which approach achieves this with the LEAST operational overhead?
Deploy additional EC2 instances across multiple regions.
Adjust the EC2 instance family and size according to performance metrics.
Migrate existing instances to Spot Instances for reduced pricing.
Implement Reserved Instances for long-term cost savings.
Explanation
Answer B is correct because adjusting EC2 instance family and size based on performance metrics (e.g., CPU, memory usage) ensures cost efficiency by right-sizing instances to match workload requirements. AWS services like Compute Optimizer automate this process, providing recommendations with minimal operational overhead.
Other options are less optimal:
- A: Deploying across regions increases complexity and costs unless required for redundancy.
- C: Spot Instances require handling interruptions, adding architectural and management effort.
- D: Reserved Instances involve upfront commitments and ongoing capacity management.
Key Points:
1. Right-sizing reduces costs by eliminating over-provisioning.
2. AWS tools automate instance optimization, minimizing effort.
3. Spot/Reserved Instances require trade-offs in flexibility or management.
Answer
The correct answer is: B