The answer is AWS CodePipeline, AWS CodeCommit, and AWS CloudFormation used together to automate CloudFormation stack updates from Git. This combination works because CodePipeline orchestrates the entire CI/CD workflow, detecting changes pushed to a CodeCommit repository and then triggering a CloudFormation deployment action to update the stack directly. On the AWS Certified DevOps Engineer Professional DOP-C02 exam, this scenario tests your understanding of how to integrate source control with infrastructure as code pipelines, often appearing as a multi-select question where you must identify the three core services. A common trap is choosing AWS CloudWatch Events or AWS CodeBuild instead—CloudWatch Events can trigger pipelines but isn’t a primary service here, while CodeBuild builds artifacts but doesn’t apply CloudFormation stacks. Remember the mnemonic “Pipe, Repo, Stack” to recall the three essential services: CodePipeline, CodeCommit, and CloudFormation.
DOP-C02 SDLC Automation Practice Question
This DOP-C02 practice question tests your understanding of sdlc automation. 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 DevOps engineer is managing infrastructure as code using AWS CloudFormation. The engineer wants to automatically update a stack when changes are pushed to a Git repository. Which THREE services can be used together to achieve this?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
AWS CloudFormation
Option A is correct because CodePipeline can orchestrate the deployment. Option B is correct because CodeCommit is the repository. Option D is correct because CloudFormation is the deployment action. Option C is wrong because CloudWatch Events can trigger pipelines but is not a primary service for this scenario. Option E is wrong because CodeBuild is for building, not directly applying CloudFormation stacks.
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
Why this is correct
CloudFormation is used to update the stack.
Related concept
Read the scenario before looking for a memorised answer.
✗
Amazon CloudWatch Events
Why it's wrong here
CloudWatch Events can trigger the pipeline, but the question asks for services used together; pipeline itself suffices.
✗
AWS CodeBuild
Why it's wrong here
CodeBuild is not required for updating a CloudFormation stack directly; it can be used for linting but not essential.
✓
AWS CodeCommit
Why this is correct
CodeCommit hosts the Git repository with the CloudFormation templates.
Related concept
Read the scenario before looking for a memorised answer.
✓
AWS CodePipeline
Why this is correct
CodePipeline can have a source stage from CodeCommit and a deploy stage that updates the CloudFormation stack.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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 DOP-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
SDLC Automation — This question tests SDLC Automation — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: AWS CloudFormation — Option A is correct because CodePipeline can orchestrate the deployment. Option B is correct because CodeCommit is the repository. Option D is correct because CloudFormation is the deployment action. Option C is wrong because CloudWatch Events can trigger pipelines but is not a primary service for this scenario. Option E is wrong because CodeBuild is for building, not directly applying CloudFormation stacks.
What should I do if I get this DOP-C02 question wrong?
Identify which DOP-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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