AWS DevOps Engineer Professional Practice Test

What is the purpose of the Undeploy lifecycle event in OpsWorks?

1. Starting new instances

2. Deleting an application or instance

3. Scaling instances based on load

4. Creating backups of applications

The correct answer is: Deleting an application or instance

The Undeploy lifecycle event in OpsWorks is specifically designed to manage the removal of an application or instance from the stack. This event triggers processes that cleanly shut down and remove application configurations, ensuring that resources are deallocated properly. When invoked, it takes care of the steps required to detach the application from the running instances and can also involve operations like stopping services and deleting related resources. This lifecycle event is crucial in managing the lifecycle of applications effectively, particularly when they are no longer needed or if you are looking to free up resources to optimize costs. By having a dedicated event for undeploying applications, OpsWorks allows users to maintain a clean and efficient environment without leaving residual components that could lead to potential issues later on. In contrast, the other options focus on different aspects of resource management: - Starting new instances pertains to scaling up resources, which is typically handled by the Launch or Start events. - Scaling instances based on load is related to dynamic scaling operations, which are often managed by configuration settings rather than a lifecycle event. - Creating backups of applications involves different workflows and isn't directly tied to the undeploy process, as backups would occur during a different lifecycle phase, likely associated with preparation or application deployment phases. Overall, the Unde