AWS Certified Cloud Practitioner — Question 210

A company is running multiple workloads in the AWS Cloud and recently began investigating ways to reduce costs. The company is already running fault-tolerant workloads on Amazon EC2 that perform periodic checkpoints in case of an outage.

Which AWS service or pricing model can provide the GREATEST cost savings?

Answer options

• A. Capacity Reservations
• B. Amazon Lightsail
• C. Spot Instances
• D. Dedicated Hosts

Correct answer: C

Explanation

Spot Instances are ideal for cost savings in AWS as they allow users to bid on unused EC2 capacity, significantly reducing costs compared to on-demand pricing. In contrast, Capacity Reservations ensure you pay for reserved capacity, Amazon Lightsail offers simplified pricing but is less flexible, and Dedicated Hosts involve higher costs since they provide physical server resources dedicated to a single customer.