- A
Amazon SQS
Why wrong: SQS decouples components with message queuing but does not orchestrate multi-step workflows, manage state between steps, or provide visual workflow execution tracking.
- B
Amazon EventBridge
Why wrong: EventBridge is an event bus that routes events based on rules. It can trigger Lambda functions but does not manage sequential multi-step workflows with state, retries, and visual monitoring.
- C
AWS Step Functions
Step Functions orchestrates multi-step workflows using a state machine model. It manages the sequence of Lambda invocations, retries failed steps, handles errors, and provides a visual console showing the current state of each workflow execution.
- D
Amazon SNS
Why wrong: SNS is a pub/sub messaging service for delivering notifications to multiple subscribers. It does not coordinate sequential workflows or manage state between steps.
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 company runs a multi-step order fulfilment process that includes payment verification, inventory check, warehouse notification, and shipping label generation. Each step is implemented as a Lambda function. They need a service to coordinate these steps, handle retries on failure, and visualise workflow state. Which AWS service should they use?
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 a serverless orchestration service that lets you coordinate multiple AWS services, including Lambda functions, into a visual workflow. It natively supports sequential execution, parallel branches, retries on failure, and state visualization, making it the ideal choice for a multi-step order fulfillment process.
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 SQS
Why it's wrong here
SQS decouples components with message queuing but does not orchestrate multi-step workflows, manage state between steps, or provide visual workflow execution tracking.
- ✗
Amazon EventBridge
Why it's wrong here
EventBridge is an event bus that routes events based on rules. It can trigger Lambda functions but does not manage sequential multi-step workflows with state, retries, and visual monitoring.
- ✓
AWS Step Functions
Why this is correct
Step Functions orchestrates multi-step workflows using a state machine model. It manages the sequence of Lambda invocations, retries failed steps, handles errors, and provides a visual console showing the current state of each workflow execution.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Amazon SNS
Why it's wrong here
SNS is a pub/sub messaging service for delivering notifications to multiple subscribers. It does not coordinate sequential workflows or manage state between steps.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse message/event services (SQS, SNS, EventBridge) with orchestration services, failing to recognize that only Step Functions provides the stateful coordination, retry logic, and visual workflow required for multi-step processes.
Detailed technical explanation
How to think about this question
Step Functions uses Amazon States Language (ASL) to define state machines, where each state can be a Task (invoking a Lambda), a Choice (branching logic), or a Wait (delays). It automatically retries failed tasks based on configurable exponential backoff and jitter, and the execution history is stored in Amazon CloudWatch Logs for auditing. In a real-world scenario, a Step Functions workflow could orchestrate payment verification, then conditionally proceed to inventory check only if payment succeeds, with each step's output passed as input to the next.
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 cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
Quick reference
Cloud Service Model Comparison
| Model | You Manage | Provider Manages | Examples |
|---|---|---|---|
| IaaS | OS, runtime, apps, data | Hardware, hypervisor, networking | EC2, Azure VMs, GCP Compute Engine |
| PaaS | Apps and data | OS, runtime, middleware, hardware | Elastic Beanstalk, Azure App Service |
| SaaS | Data and settings only | Everything else | Microsoft 365, Salesforce, Workday |
| FaaS / Serverless | Function code only | Infra, scaling, runtime | Lambda, Azure Functions, Cloud Run |
| CaaS | Containers and apps | Kubernetes, OS, hardware | EKS, AKS, GKE |
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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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 a serverless orchestration service that lets you coordinate multiple AWS services, including Lambda functions, into a visual workflow. It natively supports sequential execution, parallel branches, retries on failure, and state visualization, making it the ideal choice for a multi-step order fulfillment process.
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.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 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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