AWS Certified Cloud Practitioner — Question 736

A company needs Amazon EC2 instances for a workload that can tolerate interruptions.

Which EC2 instance purchasing option meets this requirement with the LARGEST discount compared to On-Demand prices?

Answer options

• A. Spot Instances
• B. Convertible Reserved Instances
• C. Standard Reserved Instances
• D. Dedicated Hosts

Correct answer: A

Explanation

Spot Instances leverage unused Amazon EC2 capacity and offer the deepest discounts (up to 90% off On-Demand prices) for workloads that can be interrupted with a two-minute warning. Reserved Instances require a commitment of one or three years and do not provide as high of a discount as Spot Instances. Dedicated Hosts are physical servers dedicated to a single customer and represent a high-cost option, making them unsuitable for maximizing discounts on fault-tolerant workloads.