AWS Certified Solutions Architect – Associate (SAA-C02) — Question 142

A company is using Amazon EC2 to run its big data analytics workloads. These variable workloads run each night, and it is critical they finish by the start of business the following day. A solutions architect has been tasked with designing the MOST cost-effective solution.
Which solution will accomplish this?

Answer options

Correct answer: A

Explanation

The correct answer is A, Spot Fleet, as it allows for the management of a fleet of Spot Instances, optimizing costs while ensuring that the workloads are completed on time. While Spot Instances (B) are cheaper, they do not guarantee availability, which could risk not finishing the workloads. Reserved Instances (C) require a longer commitment and are not cost-effective for variable workloads, and On-Demand Instances (D) are typically more expensive for this use case.