Quick Answer
The answer is AWS CodeBuild, AWS CodePipeline, and AWS CodeDeploy. CodeBuild is required to build the Docker image from source code and push it to Amazon ECR, while CodePipeline orchestrates the entire CI/CD workflow by connecting the build, test, and deploy stages. CodeDeploy then handles the deployment by creating a new ECS task definition and updating the Fargate service with a blue/green or rolling update strategy. On the AWS Certified DevOps Engineer Professional DOP-C02 exam, this question tests your understanding of the essential AWS services for an ECS CI/CD pipeline, often trapping candidates who mistakenly include AWS CodeCommit or Amazon ECS as a deployment service—CodeCommit is optional, and ECS itself is the compute target, not the deployment orchestrator. A common memory tip is to remember the three C’s: CodeBuild for Container image, CodePipeline for Coordination, and CodeDeploy for Container deployment.
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 company wants to implement a CI/CD pipeline for an application that runs on Amazon ECS with Fargate. The pipeline should build a Docker image, push it to Amazon ECR, and deploy a new task definition to ECS. Which THREE AWS services are required to build this pipeline?
Amazon S3
Why wrong: S3 is not required for this pipeline.
AWS CodeDeploy
Deploys the new task definition to ECS.
AWS CodePipeline
Orchestrates build and deploy stages.
AWS CodeCommit
Why wrong: CodeCommit is a source repository, but the pipeline can use other sources.
AWS CodeBuild
Builds the Docker image.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
AWS CodeDeploy
Options A, B, and D are correct. CodeBuild builds the Docker image and pushes it to ECR. CodePipeline orchestrates the stages. CodeDeploy (or ECS directly) deploys the new task definition. Option C is not a deployment service. Option E is not needed because ECR is used.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Amazon S3
Why it's wrong here
S3 is not required for this pipeline.
AWS CodeDeploy
Why this is correct
Deploys the new task definition to ECS.
Related concept
Read the scenario before looking for a memorised answer.
AWS CodePipeline
Why this is correct
Orchestrates build and deploy stages.
Related concept
Read the scenario before looking for a memorised answer.
AWS CodeCommit
Why it's wrong here
CodeCommit is a source repository, but the pipeline can use other sources.
AWS CodeBuild
Why this is correct
Builds the Docker image.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
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
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.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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
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 — study guide chapter
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FAQ
SDLC Automation — This question tests SDLC Automation — Read the scenario before looking for a memorised answer..
The correct answer is: AWS CodeDeploy — Options A, B, and D are correct. CodeBuild builds the Docker image and pushes it to ECR. CodePipeline orchestrates the stages. CodeDeploy (or ECS directly) deploys the new task definition. Option C is not a deployment service. Option E is not needed because ECR is used.
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.
Read the scenario before looking for a memorised answer.
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Same concept, more angles
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 DevOps team is implementing a CI/CD pipeline for a microservices application deployed on Amazon ECS. They want to automatically build, test, and deploy container images to Amazon ECR and then update the ECS service. Which TWO steps are essential to achieve this goal?
easyWhy A: Option A is needed to build and push the image. Option D is needed to update the ECS service. Option B is for secrets retrieval, but not essential for the pipeline flow. Option C is for static analysis, not required. Option E is for load testing, not required.
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Last reviewed: Jun 20, 2026
This DOP-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 DOP-C02 exam.
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