Explanation
Compute Savings Plans is the correct answer because:
- Cost Reduction: Compute Savings Plans offer significant discounts (up to 72%) compared to On-Demand pricing
- Usage Commitment: They require a commitment to a consistent amount of compute usage (measured in $/hour) for a 1- or 3-year term
- Flexibility: They provide flexibility to change instance families, operating systems, and tenancy while maintaining the savings
- EC2 Focus: Specifically designed for EC2 instances and other compute services
Why other options are incorrect:
- Auto Scaling group: This helps with availability and performance optimization, not cost savings through commitments
- On-Demand Instance: This is pay-as-you-go pricing with no commitments and higher costs
- EC2 instance store: This refers to temporary block-level storage, not a cost-saving mechanism
Savings Plans are AWS's recommended way to save on compute costs when you can commit to consistent usage patterns.