AWS Certified Solutions Architect – Professional (SAP-C02) — Question 257

A company runs many workloads on AWS and uses AWS Organizations to manage its accounts. The workloads are hosted on Amazon EC2. AWS Fargate. and AWS Lambda. Some of the workloads have unpredictable demand. Accounts record high usage in some months and low usage in other months.

The company wants to optimize its compute costs over the next 3 years. A solutions architect obtains a 6-month average for each of the accounts across the organization to calculate usage.

Which solution will provide the MOST cost savings for all the organization's compute usage?

Answer options

• A. Purchase Reserved Instances for the organization to match the size and number of the most common EC2 instances from the member accounts.
• B. Purchase a Compute Savings Plan for the organization from the management account by using the recommendation at the management account level.
• C. Purchase Reserved Instances for each member account that had high EC2 usage according to the data from the last 6 months.
• D. Purchase an EC2 Instance Savings Plan for each member account from the management account based on EC2 usage data from the last 6 months.

Correct answer: B

Explanation

The correct answer is B because a Compute Savings Plan allows flexibility across different instance types and services, which is ideal for unpredictable workloads. Options A and C are less effective as they are limited to Reserved Instances, which do not offer the same level of flexibility. Option D, while similar to B, focuses specifically on EC2 instances rather than providing a broader cost-saving strategy across all compute services.