Amazon Web Services (AWS CodeDeploy): Auto Assignment of Elastic IP to green/blue deployment fleet replacement instances.
With a blue/green deployment, you provision a new set of instances on which CodeDeploy installs the latest version of your application. CodeDeploy then reroutes load balancer traffic from an existing set of instances running the previous version of your application to the new set of instances running the latest version. After traffic is rerouted to the new instances, the existing instances can be terminated. Blue/green deployments allow you to test the new application version before sending production traffic to it. If there is an issue with the newly deployed application version, you can roll back to the previous version faster than with in-place deployments. Additionally, the instances provisioned for the blue/green deployment will reflect the most up-to-date server configurations since they are new. Problem with Blue/Green deployment is that once the fleet is replaces, if you had any EIP attached to the older instances, you have to manually reattch them to the new fleet. Her
