The answer is AWS Batch with a managed compute environment using Spot Instances and a job queue. This is correct because AWS Batch is purpose-built for long-running batch processing that exceeds Lambda’s 15-minute maximum execution time, automatically provisioning and scaling EC2 instances without requiring manual infrastructure management. On the AWS Certified Solutions Architect Professional SAP-C02 exam, this scenario tests your understanding of compute service boundaries—specifically that Lambda is stateless and time-limited, while AWS Batch handles jobs lasting hours by orchestrating containerized workloads on Spot Instances for cost efficiency. A common trap is choosing Lambda for simplicity, forgetting its execution timeout, or selecting ECS with Fargate, which adds unnecessary complexity for batch workloads. Remember the memory tip: “Batch for batches, Lambda for lambdas”—if your job runs longer than a coffee break, Batch is the right pick.
SAP-C02 Continuous Improvement for Existing Solutions Practice Question
This SAP-C02 practice question tests your understanding of continuous improvement for existing solutions. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company runs a batch processing application on AWS. The application reads input files from an S3 bucket, processes them on EC2 instances, and writes results to another S3 bucket. The processing job runs once a day and takes approximately 3 hours. The company wants to reduce costs and operational overhead. The Solutions Architect suggests using AWS Lambda for processing, but the processing time per file can exceed the Lambda maximum execution time of 15 minutes. The architect also considers using AWS Batch. The company wants to minimize the need for infrastructure management. Which solution should the Solutions Architect recommend?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "minimum / minimize"
Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use AWS Batch with a managed compute environment that uses Spot Instances and a job queue.
Option B is correct because AWS Batch manages the compute environment, automatically scales, and handles long-running jobs without managing EC2 instances directly. Option A is wrong because Lambda has a 15-minute limit. Option C is wrong because it requires manual management of EC2 instances. Option D is wrong because Fargate launch type for ECS can run long tasks but requires more setup than AWS Batch for batch jobs.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Provision a fleet of EC2 instances and use Auto Scaling to manage the processing.
Why it's wrong here
Requires more operational overhead.
✗
Use AWS Lambda with a larger memory allocation to increase CPU and reduce processing time.
Why it's wrong here
Lambda maximum execution time is 15 minutes, which may not be sufficient.
✓
Use AWS Batch with a managed compute environment that uses Spot Instances and a job queue.
Why this is correct
AWS Batch manages infrastructure and supports long-running jobs.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use Amazon ECS with Fargate launch type and run the processing as a task.
Why it's wrong here
Fargate is possible but AWS Batch is more specialized for batch jobs.
Common exam traps
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.
Detailed technical explanation
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.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
What to study next
Got this wrong? Here's your next step.
Identify which SAP-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Continuous Improvement for Existing Solutions — This question tests Continuous Improvement for Existing Solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use AWS Batch with a managed compute environment that uses Spot Instances and a job queue. — Option B is correct because AWS Batch manages the compute environment, automatically scales, and handles long-running jobs without managing EC2 instances directly. Option A is wrong because Lambda has a 15-minute limit. Option C is wrong because it requires manual management of EC2 instances. Option D is wrong because Fargate launch type for ECS can run long tasks but requires more setup than AWS Batch for batch jobs.
What should I do if I get this SAP-C02 question wrong?
Identify which SAP-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Are there clue words in this question I should notice?
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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