- A
AWS Step Functions
Correct. AWS Step Functions allows you to define workflows as state machines that can orchestrate multiple AWS services, manage sequencing, error handling, and retries without custom code.
- B
Amazon Simple Queue Service (SQS)
Why wrong: Incorrect. Amazon SQS is a fully managed message queue service used to decouple applications. It does not provide built-in orchestration or state management for sequential steps.
- C
Amazon EventBridge
Why wrong: Incorrect. Amazon EventBridge is a serverless event bus that routes events from sources to targets. While it can trigger actions based on events, it does not define or enforce a specific sequential workflow.
- D
AWS Lambda
Why wrong: Incorrect. AWS Lambda runs code in response to events but does not natively orchestrate multi-step processes. Developers would need to write custom orchestration logic to sequence multiple Lambda functions.
CLF-C02 Cloud Technology and Services Practice Question
This CLF-C02 practice question tests your understanding of cloud technology and services. 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 development team is building a serverless image processing application. When a user uploads an image to Amazon S3, the application must perform three sequential steps: first, resize the image; second, generate a thumbnail; third, store metadata in Amazon DynamoDB. The team wants to define this workflow as a visual state machine, handle errors with retries, and manage the execution flow without writing custom orchestration code. Which AWS service should the team use?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"first"Why it matters: Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
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 Step Functions
AWS Step Functions is the correct choice because it allows you to define a visual state machine that orchestrates three sequential steps (resize, thumbnail, metadata storage) without writing custom orchestration code. It natively supports error handling with retries and manages execution flow, making it ideal for serverless workflows that require coordination across multiple AWS services like Lambda and DynamoDB.
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.
- ✓
AWS Step Functions
Why this is correct
Correct. AWS Step Functions allows you to define workflows as state machines that can orchestrate multiple AWS services, manage sequencing, error handling, and retries without custom code.
Clue confirmation
The clue word "first" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Amazon Simple Queue Service (SQS)
Why it's wrong here
Incorrect. Amazon SQS is a fully managed message queue service used to decouple applications. It does not provide built-in orchestration or state management for sequential steps.
- ✗
Amazon EventBridge
Why it's wrong here
Incorrect. Amazon EventBridge is a serverless event bus that routes events from sources to targets. While it can trigger actions based on events, it does not define or enforce a specific sequential workflow.
- ✗
AWS Lambda
Why it's wrong here
Incorrect. AWS Lambda runs code in response to events but does not natively orchestrate multi-step processes. Developers would need to write custom orchestration logic to sequence multiple Lambda functions.
Common exam traps
Common exam trap: answer the scenario, not the keyword
AWS often tests the distinction between orchestration and messaging services, and the trap here is that candidates confuse Amazon SQS or EventBridge as workflow orchestrators because they handle events, but they lack the sequential state management and retry logic that Step Functions provides.
Detailed technical explanation
How to think about this question
AWS Step Functions uses Amazon States Language (ASL) to define state machines, which can include Task, Choice, Parallel, and Wait states. Under the hood, Step Functions tracks execution history and automatically retries failed tasks based on configurable policies (e.g., exponential backoff, max retries). In a real-world scenario, if the resize step fails due to a transient error, Step Functions can retry it without affecting the thumbnail generation or metadata storage, ensuring workflow reliability.
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.
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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Cloud Technology and Services — study guide chapter
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FAQ
Questions learners often ask
What does this CLF-C02 question test?
Cloud Technology and Services — This question tests Cloud Technology and Services — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: AWS Step Functions — AWS Step Functions is the correct choice because it allows you to define a visual state machine that orchestrates three sequential steps (resize, thumbnail, metadata storage) without writing custom orchestration code. It natively supports error handling with retries and manages execution flow, making it ideal for serverless workflows that require coordination across multiple AWS services like Lambda and DynamoDB.
What should I do if I get this CLF-C02 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "first". Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
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 →
Last reviewed: Jun 30, 2026
This CLF-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 CLF-C02 exam.
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