Automating Build, Test, and Deployment Steps for Web Applications

Correct Answer - B.

AWS CodePipeline is a fully managed service that automates the release pipeline for application updates.

For updates, it uses application code stored in AWS CodeCommit, performs testing using AWS CodeBuild, and uses AWS CodeDeploy for deployment.

Option A is incorrect as AWS CodeCommit is used to store deployment codes.

Option C is incorrect as AWS CodeDeploy is used for deployment of codes to resources.

Option D is incorrect as AWS CodeBuild is used to test and build application code.

For more information on AWS CodePipeline, refer to the following URL:

https://aws.amazon.com/codepipeline/faqs/

The service that can be used to create steps required to automate build, test and deployments for a web application is AWS CodePipeline (option B).

AWS CodePipeline is a fully managed continuous delivery service that helps you automate your release pipelines for fast and reliable application and infrastructure updates. With CodePipeline, you can define a series of steps or stages, which represent the different parts of your application delivery process, such as building, testing, and deploying. You can use pre-built actions, or create custom ones, to define the tasks that need to be executed in each stage.

In the case of a web application, you can use CodePipeline to automatically build your application code from a source code repository (such as AWS CodeCommit), run automated tests, and then deploy the application to your chosen environment (such as Amazon EC2 instances or AWS Elastic Beanstalk).

CodePipeline also integrates with other AWS services, such as AWS CodeBuild (option D) for building and packaging your application code, AWS CodeDeploy (option C) for deploying your code to a fleet of EC2 instances or on-premises servers, and AWS CloudFormation for managing your infrastructure as code.

AWS CodeCommit (option A) is a fully-managed source control service that hosts secure and highly scalable private Git repositories. It can be used to store and version your application code, but it doesn't provide the automated build, test, and deployment capabilities of CodePipeline.

In summary, AWS CodePipeline (option B) is the service that can be used to create steps required to automate build, test and deployments for a web application.