AWS CodeDeploy

Building and testing your code is only half the story. You also need to get it onto your servers, containers, or Lambda functions — reliably and with the ability to roll back if something goes wrong. AWS CodeDeploy is a fully managed deployment service that automates application deployments to Amazon EC2 instances, on-premises servers, Lambda functions, and Amazon ECS services.

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Why CodeDeploy?

Manual deployments are error-prone and stressful. Common problems include:

• Forgetting to update a configuration file on one server
• Deploying to all servers at once, causing a full outage when a bug slips through
• Having no automated way to roll back to the previous version
• Inconsistent deployment procedures between team members

CodeDeploy solves these problems by providing a repeatable, automated deployment process with built-in health checks and rollback support.

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Core Concepts

Application

A CodeDeploy application is a logical container that groups your deployment configuration. You create one application per workload.

Deployment Group

A deployment group defines the target environment — which EC2 instances, Lambda function, or ECS service should receive the deployment. For EC2, you can target instances by: