AWS CodeDeploy is a service that simplifies the process of deploying changes to applications across EC2 instances or on-premise hosts. It integrates with other AWS services and tools like Ansible, Chef, Puppet, and Jenkins to automate deployment. Datadog's new integration helps monitor AWS CodeDeploy by tracking deployment failures, execution time, and impact on application performance. The integration provides complete observability of AWS applications and infrastructure in one place. AWS CodeDeploy can deploy to on-premise instances but is particularly useful for rolling out updates to AWS applications. It allows users to configure deployments to apply revisions to Auto Scaling groups or use Elastic Load Balancing to route traffic away from instances during deployment. The service also enables automatic rollbacks if a deployment fails and manual stopping of deployments as needed. Datadog's integration with CodeDeploy provides rich context to help identify and fix deployment issues quickly, including tracking deploys, setting up alerts, and visualizing performance trends.