- A
AWS CloudFormation StackSets
Why wrong: Incorrect. StackSets enable you to deploy the same stack across multiple accounts and Regions, not to preview or approve changes before they are applied to a single stack.
- B
AWS CloudFormation Change Sets
Correct. Change Sets allow you to examine how proposed changes to a stack will impact your running resources before you decide to apply them, providing a mechanism for review and approval.
- C
AWS CloudFormation Drift Detection
Why wrong: Incorrect. Drift Detection identifies whether the actual state of resources has deviated from the expected stack template, but it does not provide a way to review or approve changes before they are applied.
- D
AWS CloudFormation Stack Policies
Why wrong: Incorrect. Stack Policies define update-protected resources within a stack to prevent accidental modifications, but they are not used to review or approve proposed changes.
Quick Answer
The answer is AWS CloudFormation Change Sets. This feature is correct because it provides a detailed preview of how proposed stack updates will affect your existing resources before any changes are executed, allowing the operations team to review and explicitly approve modifications rather than applying them automatically. On the AWS Certified Cloud Practitioner CLF-C02 exam, this question tests your understanding of CloudFormation’s safe deployment mechanisms, often appearing alongside distractors like stack policies or drift detection. A common trap is confusing change sets with direct stack updates—remember that change sets are a dry run, not an execution. For the exam, think of change sets as a “preview and approve” gate: you see the diff, get approval, then apply. A helpful memory tip is “Change Sets = Check, then Set,” reinforcing that review must come before the actual stack update.
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 uses AWS CloudFormation to define and manage its production infrastructure as code. The operations team wants to ensure that any proposed changes to the stack are reviewed and explicitly approved before being applied. Which AWS CloudFormation feature should the company 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 CloudFormation Change Sets
AWS CloudFormation Change Sets allow you to preview how proposed changes to a stack will impact your running resources before you apply them. This enables the operations team to review and explicitly approve changes, ensuring that modifications are not applied automatically without oversight.
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 CloudFormation StackSets
Why it's wrong here
Incorrect. StackSets enable you to deploy the same stack across multiple accounts and Regions, not to preview or approve changes before they are applied to a single stack.
- ✓
AWS CloudFormation Change Sets
Why this is correct
Correct. Change Sets allow you to examine how proposed changes to a stack will impact your running resources before you decide to apply them, providing a mechanism for review and approval.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
AWS CloudFormation Drift Detection
Why it's wrong here
Incorrect. Drift Detection identifies whether the actual state of resources has deviated from the expected stack template, but it does not provide a way to review or approve changes before they are applied.
- ✗
AWS CloudFormation Stack Policies
Why it's wrong here
Incorrect. Stack Policies define update-protected resources within a stack to prevent accidental modifications, but they are not used to review or approve proposed changes.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Change Sets with Stack Policies, thinking that policies can enforce approval workflows, but Stack Policies only restrict updates to specific resources, not provide a review-and-approve mechanism.
Detailed technical explanation
How to think about this question
A Change Set is generated by comparing the current stack template with a proposed template, producing a list of resource additions, modifications, or deletions. The operations team can inspect this list in the AWS Management Console or via the AWS CLI before executing the change set, which then applies the changes as a single atomic operation. This feature is critical in production environments where unintended changes can cause downtime or security breaches.
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.
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 CloudFormation Change Sets — AWS CloudFormation Change Sets allow you to preview how proposed changes to a stack will impact your running resources before you apply them. This enables the operations team to review and explicitly approve changes, ensuring that modifications are not applied automatically without oversight.
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.
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 →
Same concept, more angles
1 more ways this is tested on CLF-C02
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Which AWS service helps you manage and deploy infrastructure as code using templates?
easy- A.AWS Elastic Beanstalk
- ✓ B.AWS CloudFormation
- C.AWS OpsWorks
- D.AWS CodeDeploy
Why B: AWS CloudFormation is the correct service because it allows you to model and provision AWS resources using declarative templates (JSON or YAML). This enables Infrastructure as Code (IaC) by treating infrastructure as version-controlled, repeatable code, which can be used to create, update, and delete entire stacks of resources in a predictable manner.
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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