A company runs a batch processing workload on Amazon EC2. The workload can be interrupted and resumed without data loss. The company wants to minimize compute costs. Which TWO strategies should be used? (Select TWO.)

Answer options:

Purchase EC2 Reserved Instances.

Use EC2 Spot Instances.

Use an Auto Scaling group to manage the instances.

Use EC2 Dedicated Hosts.

Purchase Compute Savings Plans.

How to approach this question

Identify the workload type: 'can be interrupted' (fault-tolerant). Spot instances are the cheapest option.

Full Answer

Amazon EC2 Spot Instances let you take advantage of unused EC2 capacity at up to a 90% discount. They are perfect for fault-tolerant, flexible workloads. Using an Auto Scaling group ensures that if Spot instances are interrupted, new ones are requested automatically.

Common mistakes

Choosing Reserved Instances for a workload that doesn't need to run 24/7.

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