A company has three workloads. First, a stable EC2 application will remain on the same instance family for at least one year. Second, an ECS service on Fargate may shift between launch types but has steady baseline usage. Third, a fault-tolerant nightly batch job can be interrupted and restarted. Which three pricing choices should the architect recommend? Select three.
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
Best answer
Standard Reserved Instances for the EC2 application.
A stable EC2 workload on the same family is a classic Reserved Instance use case because the commitment matches the predictable baseline.
Best answer
Compute Savings Plans for the Fargate service.
Compute Savings Plans are appropriate when the workload may change compute platforms, because they still provide discount flexibility.
Best answer
Spot Instances for the nightly batch job.
Interruptible batch processing is well suited to Spot because the workload can resume after interruptions without losing business value.
Distractor review
On-Demand Instances for all three workloads.
On-Demand is flexible, but it does not provide the savings that the steady and interruptible workloads clearly justify.
Distractor review
Dedicated Hosts for the batch job.
Dedicated Hosts are for isolation and specific licensing needs, not for lowering cost on a fault-tolerant batch workload.
Common exam trap
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Technical deep dive
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
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FAQ
Questions learners often ask
What does this SAA-C03 question test?
Read the scenario before looking for a memorised answer.
What is the correct answer to this question?
The correct answer is: Standard Reserved Instances for the EC2 application. — The stable EC2 application is best served by Standard Reserved Instances because the family will not change and the one-year horizon supports a commitment. The Fargate workload is a better match for Compute Savings Plans because those apply across supported compute services and preserve flexibility. The batch job should use Spot Instances because it can tolerate interruption and restart, making the lowest-cost option appropriate. Why others are wrong: Using On-Demand everywhere wastes savings for workloads that have clearly defined commitment or interruption characteristics. Dedicated Hosts are expensive and only justified for tenancy or licensing constraints, which are not present in this scenario.
What should I do if I get this SAA-C03 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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