<strong>You are a new graduate and are trying to get an AWS DevOps job. To prepare for a tech interview, the recruiter has given you a task to use AWS to build up a Hello World web service in one week. </strong>

Answer options:

A.In CodePipeline, add a Source stage with CodeCommit. Add a Staging stage with CodeBuild to build the new artifact which is a RPM package or an executable file and store it in S3. Add a Deploy stage that uses CloudFormation to create a new task definition revision that points to the installation package in S3 and updates the ECS service to use the new task definition revision.
B.In CodePipeline, add a Source stage with CodeCommit. Add a Build stage with CodeBuild to build a new Docker container image and store it in S3. Add a Deploy stage that uses CloudFormation to create a new ECS Cluster that points to S3 URL with the newly built Docker container image and updates the relevant ECS service.
C.In CodePipeline, add a Source stage with CodeCommit. Add a Build stage with CodeBuild to build a new Docker container image and push it to ECR. Add a Deploy stage that uses CloudFormation to create a new task definition revision that points to the newly built Docker container image and updates the ECS service to use the new task definition revision.
D.In CodePipeline, add a Source stage with CodeCommit. Add a Build stage with CodeBuild to build the new artifact which is a RPM package or an executable file and push it to ECR. Add a Deploy stage that uses CloudFormation to create a new task definition revision that points to the newly built Docker container image and updates the ECS service to use the new task definition revision.

Correct Answer C
The below is a pipeline that has used the required services for a web service:
irst, in the Source stage, the pipeline is configured with details for accessing a source code repository system. CodeCommit can be used at this stage.
Secondly, the Build stage uses CodeBuild to create a new Docker container image based upon the latest source code and pushes it to an ECR repository. CodePipeline also integrates with a number of third-party build systems, such as Jenkins, CloudBees, Solano CI, and TeamCity.
Finally, the Deploy stage uses CloudFormation to create a new task definition revision that points to the newly built Docker container image and updates the ECS service to use the new task definition revision. After this is done, ECS initiates a deployment by fetching the new Docker container from ECR and restarting the service.
The details can be found in https://aws.amazon.com/blogs/compute/continuous-deployment-to-amazon-ecs-using-aws-codepipeline-aws-codebuild-amazon-ecr-and-aws-cloudformation/.
Option? ?A is ?incorrect because firstly it should be a Build stage rather than a Staging stage. Secondly, it should generate a Docker image and push it to ECR for ECS to use later on.
Option? ?B is ?incorrect because the new Docker image should be put in ECR for ECS to use. S3 is not the correct place for Docker images. Moreover, in Deploy stage, CloudFormation should create an ECS task definition rather than an ECS cluster for each deployment activity.
Option? D? ?is? ?incorrect because in Build stage, CodeBuild should generate a Docker image and push it to ECR. A RPM package or an executable file cannot be put into ECR.