- A
Amazon ECS
Why wrong: ECS requires cluster management.
- B
AWS Lambda
Lambda is event-driven and serverless.
- C
Amazon EC2
Why wrong: EC2 requires provisioning and management.
- D
AWS Fargate
Why wrong: Fargate runs containers, not functions.
Question 710 of 1,746
SAP-C02 Design for New Solutions Practice Question
This SAP-C02 practice question tests your understanding of design for new 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 startup needs a serverless compute service to run code in response to S3 events. The code should execute within milliseconds and require no server management. Which AWS service should be used?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
AWS Lambda
AWS Lambda is the correct choice because it is a serverless compute service that executes code in response to events, such as S3 object creation, with sub-millisecond startup times. It automatically scales and requires no server management, making it ideal for this use case.
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.
- ✗
Amazon ECS
Why it's wrong here
ECS requires cluster management.
- ✓
AWS Lambda
Why this is correct
Lambda is event-driven and serverless.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Amazon EC2
Why it's wrong here
EC2 requires provisioning and management.
- ✗
AWS Fargate
Why it's wrong here
Fargate runs containers, not functions.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse AWS Fargate as a serverless compute option for event-driven workloads, but Fargate is designed for containerized applications with longer runtimes and higher latency, not for sub-millisecond event responses.
Detailed technical explanation
How to think about this question
AWS Lambda uses a Firecracker microVM-based isolation model to achieve cold starts in under 100ms for most runtimes, and it can be further optimized with provisioned concurrency. The S3 event notification integration sends events directly to Lambda via the S3 bucket's event notification configuration, which uses a PUT or POST request to invoke the function asynchronously. In real-world scenarios, this pattern is used for real-time image processing or log aggregation, where Lambda's stateless execution and automatic scaling handle thousands of concurrent S3 events.
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.
TExam Day Tips
- 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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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Design for New Solutions — study guide chapter
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FAQ
Questions learners often ask
What does this SAP-C02 question test?
Design for New Solutions — This question tests Design for New Solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: AWS Lambda — AWS Lambda is the correct choice because it is a serverless compute service that executes code in response to events, such as S3 object creation, with sub-millisecond startup times. It automatically scales and requires no server management, making it ideal for this use case.
What should I do if I get this SAP-C02 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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Last reviewed: Jul 4, 2026
This SAP-C02 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SAP-C02 exam.
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