AWS Certified Cloud Practitioner — Question 890

A company is launching an ecommerce application that must always be available. The application will run on Amazon EC2 instances continuously for the next
12 months.
What is the MOST cost-effective instance purchasing option that meets these requirements?

Answer options

• A. Spot Instances
• B. Savings Plans
• C. Dedicated Hosts
• D. On-Demand Instances

Correct answer: B

Explanation

Savings Plans provide a significant discount compared to On-Demand Instances in exchange for a 1-year or 3-year commitment, making them the most cost-effective choice for a continuous 12-month workload. Spot Instances are unsuitable because they can be terminated with little notice, violating the high availability requirement. On-Demand Instances and Dedicated Hosts would be significantly more expensive for this predictable, long-term scenario.