A company runs a batch processing workload on Amazon EC2. The workload can be interrupted and resumed without any data loss. The processing jobs take a few hours to complete and the company wants to minimize compute costs.<br/><br/>Which EC2 pricing model should be used?

Answer options:

On-Demand Instances

Reserved Instances

Spot Instances

Dedicated Hosts

How to approach this question

Look for the keywords 'can be interrupted' and 'minimize compute costs'.

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. Because Spot Instances can be interrupted, they are ideal for fault-tolerant, flexible workloads like batch processing.

Common mistakes

Choosing Reserved Instances, which require a long-term commitment.

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