A company runs a batch processing job on Amazon EC2 every night. The job takes about 3 hours to complete. The workload is fault-tolerant and can be interrupted and resumed without issues. Which EC2 pricing model provides the MAXIMUM cost savings for this workload?

Answer options:

On-Demand Instances

Reserved Instances

Spot Instances

Dedicated Hosts

How to approach this question

Match 'fault-tolerant' and 'can be interrupted' directly with Spot Instances.

Full Answer

C.Spot Instances✓ Correct

Amazon EC2 Spot Instances let you take advantage of unused EC2 capacity in the AWS cloud. Spot Instances are available at up to a 90% discount compared to On-Demand prices.

Common mistakes

Choosing Reserved Instances for a job that only runs 3 hours a day.

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