A company runs an application on AWS that performs batch jobs. The application is fault-tolerant and can handle interruptions. The company wants to optimize the cost to run the application. Which AWS

Question

Options

• AAmazon Macie
• BAmazon Neptune
• CAmazon EC2 Spot Instances
• DAmazon EC2 On-Demand Instances

• B
  3% (1)
• C
  90% (28)
• D
  6% (2)

Explanation

Explanation

Amazon EC2 Spot Instances are the ideal choice because they allow you to purchase unused EC2 capacity at discounts of up to 90% compared to On-Demand pricing, making them perfect for cost optimization. Since Spot Instances can be interrupted with a two-minute warning, they are best suited for fault-tolerant, flexible workloads like batch processing - exactly what this scenario describes.

Why the distractors are wrong:

• Amazon Macie (A) is a data security service that uses machine learning to discover and protect sensitive data - completely unrelated to compute cost optimization
• Amazon Neptune (B) is a managed graph database service, not a compute solution
• Amazon EC2 On-Demand Instances (D) provide reliable compute capacity but at full price with no discount, making them the more expensive option and not optimal for cost savings

Memory Tip: Think of Spot Instances like discounted airline standby tickets - you get a great price, but the airline (AWS) can bump you if they need the seat. If your workload can handle that interruption (like batch jobs), you save big. The key phrase to look for on the exam is "fault-tolerant" + "cost optimization" = Spot Instances!

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