Which AWS Service Automates Deployment to EC2 and On-Premises Instances?

Why the Answer Is Correct

AWS CodeDeploy is explicitly defined as a fully managed deployment service that automates software deployment to any compute service, including Amazon EC2 instances, Lambda functions, and — critically for this question — instances running on premises. It installs the application revision, runs deployment lifecycle hooks such as BeforeInstall and AfterInstall, and supports blue/green as well as in-place deployment types across hybrid fleets. Because the requirement names both EC2 instances and on-premises instances as deployment targets, CodeDeploy is the only option designed to perform the deployment action on those hosts. All three community contributors independently selected option C, and the vote distribution was unanimous at 100% for C.

Why the Other Options Are Wrong

AWS CodeCommit (A) is a source control service that hosts private Git repositories, so it stores code rather than deploying it to instances. AWS CodeBuild (B) compiles source code, runs unit tests, and produces build artifacts, but it never installs those artifacts onto EC2 or on-premises hosts. AWS CodePipeline (D) is a continuous delivery orchestration service that models the release workflow stages, yet it deploys nothing by itself — it invokes CodeDeploy as the deployment action, which is why as its_tima noted CodeDeploy is the component that 'automates code deployments to any instance.'

Community Comment Notes

alokdixit2006 captured the exact exam phrasing, stating that CodeDeploy 'Automates code deployments to any instance, including EC2 instances and instances running on premises.' its_tima reinforced the same conclusion by separating all four services, describing CodeCommit as 'a fully managed source control service that hosts private Git repositories.' d00b229 simply concluded 'C. AWS CodeDeploy.' All commentary aligns with the analysis, with no dissenting option raised.