AWS Elastic Beanstalk Supports Rolling Application Version Deployments
You can now choose how your applications are deployed to Elastic Beanstalk environments. You can select whether to deploy an application to all EC2 instances in your environment at once or roll the deployment through all the instances. You can set the number of instances to incrementally update as a percentage of the entire fleet or as a fixed number. This feature enables you to make an update without having to take all your instances offline.
You can now choose how your applications are deployed to Elastic Beanstalk environments. You can select whether to deploy an application to all EC2 instances in your environment at once or roll the deployment through all the instances. You can set the number of instances to incrementally update as a percentage of the entire fleet or as a fixed number. This feature enables you to make an update without having to take all your instances offline.
Please see the documentation for this feature to learn more.
For more information on AWS Elastic Beanstalk: