A company runs a fault-tolerant batch-processing application on AWS that can tolerate interruptions. To minimize costs, which AWS offering should they use?
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Correct answer: Amazon EC2 Spot Instances.
Why this is the answer
Amazon EC2 Spot Instances are the most cost-effective option for fault-tolerant applications that can tolerate interruptions. Spot Instances allow you to bid on unused EC2 capacity, offering significant discounts compared to On-Demand prices. Since the batch-processing application is fault-tolerant and can handle interruptions, it can gracefully stop and restart if a Spot Instance is reclaimed by AWS, making it an ideal use case for cost optimization. Amazon EC2 On-Demand Instances provide consistent pricing but are more expensive. Amazon Macie is a data security and privacy service, and Amazon Neptune is a graph database service; neither is relevant for compute cost optimization.
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