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Configuration Management and IaC →mediumMultiple SelectObjective-mapped

CloudFormation Change Set Approval Workflow for Safe Deployments

This DOP-C02 practice question tests your understanding of configuration management and iac. 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 manage a production environment with multiple stacks. The DevOps team needs to implement a change management process that requires approval for any changes to the production stack. Which approaches meet this requirement? (Choose TWO.)

A
Create an IAM policy that allows only read-only access to the production stack and a separate role with write access.
Why wrong: Incorrect. SCPs are used to restrict permissions across accounts, but they do not enforce a change management process, and denying all CloudFormation actions except from a specific role does not require approval.
B
Require that all stack updates be performed through a change set that is reviewed and executed by a separate role.
Correct. CloudFormation change sets allow previewing changes and require a separate role to execute, enforcing a two-person rule.
C
Use AWS CodePipeline with a manual approval step before executing a CloudFormation change set.
Correct. AWS CodePipeline with manual approval step provides an approval gate before executing the change set.
D
Use AWS Config rules to detect unapproved changes and automatically revert them.
Why wrong: Incorrect. IAM policies can control permissions but do not enforce an approval workflow or change management process. They control who can perform actions, not the sequence or review.
E
Use an SCP to deny all CloudFormation actions except from a specific CI/CD role.
Why wrong: Incorrect. AWS Config can detect changes but cannot automatically revert them; it only evaluates resources against rules.

Full breakdown with real-world context →

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

✓

Require that all stack updates be performed through a change set that is reviewed and executed by a separate role.

Option B is correct because CloudFormation change sets allow you to preview how proposed changes will affect running resources before you execute them. By requiring a separate IAM role to review and execute the change set, you enforce a two-person rule for production stack updates. Option C is correct because AWS CodePipeline can include a manual approval step that pauses the pipeline, requiring a reviewer to approve before the pipeline executes a CloudFormation change set, thus enforcing an approval gate.

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.

✗
Create an IAM policy that allows only read-only access to the production stack and a separate role with write access.
Why it's wrong here
Incorrect. SCPs are used to restrict permissions across accounts, but they do not enforce a change management process, and denying all CloudFormation actions except from a specific role does not require approval.
✓
Require that all stack updates be performed through a change set that is reviewed and executed by a separate role.
Why this is correct
Correct. CloudFormation change sets allow previewing changes and require a separate role to execute, enforcing a two-person rule.
Related concept
Read the scenario before looking for a memorised answer.
✓
Use AWS CodePipeline with a manual approval step before executing a CloudFormation change set.
Why this is correct
Correct. AWS CodePipeline with manual approval step provides an approval gate before executing the change set.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use AWS Config rules to detect unapproved changes and automatically revert them.
Why it's wrong here
Incorrect. IAM policies can control permissions but do not enforce an approval workflow or change management process. They control who can perform actions, not the sequence or review.
✗
Use an SCP to deny all CloudFormation actions except from a specific CI/CD role.
Why it's wrong here
Incorrect. AWS Config can detect changes but cannot automatically revert them; it only evaluates resources against rules.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates often think IAM policies alone can enforce an approval workflow, but IAM only controls who can perform actions, not the sequence or review of those actions; change sets and CodePipeline approval steps are the correct mechanisms for enforcing a change management process.

Detailed technical explanation

How to think about this question

CloudFormation change sets generate a list of resource-level changes using the same template processing engine as stack updates, but they do not actually modify resources until explicitly executed. In CodePipeline, the manual approval action uses Amazon SNS notifications and a webhook to pause the pipeline, and the approval token must be provided via the console or API to proceed. This ensures that the change set is reviewed by a human or external system before the UpdateStack API call is made.

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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.

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 DOP-C02 question test?

Configuration Management and IaC — This question tests Configuration Management and IaC — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: Require that all stack updates be performed through a change set that is reviewed and executed by a separate role. — Option B is correct because CloudFormation change sets allow you to preview how proposed changes will affect running resources before you execute them. By requiring a separate IAM role to review and execute the change set, you enforce a two-person rule for production stack updates. Option C is correct because AWS CodePipeline can include a manual approval step that pauses the pipeline, requiring a reviewer to approve before the pipeline executes a CloudFormation change set, thus enforcing an approval gate.

What should I do if I get this DOP-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

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Same concept, more angles

2 more ways this is tested on DOP-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. A company uses AWS CloudFormation to manage infrastructure. The DevOps team wants to implement a change management process where all stack updates must be reviewed before execution. Which AWS feature should be used?

hard

A.Drift detection
✓ B.Change Sets
C.StackSets
D.Stack policies

Why B: Change Sets allow you to preview how proposed changes to a CloudFormation stack will impact your running resources before you execute them. This enables a review-and-approval workflow, making it the correct choice for implementing a change management process where all stack updates must be reviewed before execution.

Variation 2. A company uses AWS CloudFormation to manage infrastructure. The team wants to ensure that all stack updates are reviewed and approved before execution. Which mechanism should the team implement?

medium

A.Create a stack policy that denies all updates unless approved.
B.Use AWS CloudFormation drift detection to identify changes before updating.
C.Enable termination protection on the stack to prevent accidental updates.
✓ D.Use AWS CloudFormation change sets to review the proposed changes before executing the update.

Why D: AWS CloudFormation change sets allow you to preview how proposed changes to a stack will be applied before you execute them. This includes a summary of additions, modifications, and deletions of resources, enabling you to review and approve the changes in a controlled manner. By generating a change set, the team can ensure that no update is executed without prior review and approval, meeting the requirement for a gated deployment process.

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