AWS Certified Solutions Architect – Associate (SAA-C03) — Question 538

A company needs to optimize the cost of its Amazon EC2 instances. The company also needs to change the type and family of its EC2 instances every 2-3 months.

What should the company do to meet these requirements?

Answer options

• A. Purchase Partial Upfront Reserved Instances for a 3-year term.
• B. Purchase a No Upfront Compute Savings Plan for a 1-year term.
• C. Purchase All Upfront Reserved Instances for a 1-year term.
• D. Purchase an All Upfront EC2 Instance Savings Plan for a 1-year term.

Correct answer: B

Explanation

Compute Savings Plans provide the flexibility to change instance families, sizes, operating systems, and regions while still receiving discounted pricing, making them ideal for changing instance types every 2-3 months. In contrast, EC2 Instance Savings Plans and standard Reserved Instances lock you into a specific instance family, which does not meet the company's requirement for frequent modifications. Therefore, a 1-year Compute Savings Plan is the most suitable cost-optimization strategy.