You can use the Elastic Beanstalk Environment task to create, update, rebuild, restart, swap or terminate an AWS Elastic Beanstalk environment (see AWS Elastic Beanstalk Components for details on applications, versions and environments).
The required Version Label stems from an Application Version previously provisioned - assuming an Application already exists, the typical deployment cycle is as follows:
- upload a source bundle via the S3 Object task's Upload action
- create a version via the Elastic Beanstalk Application Version task's Create action
- deploy that version via the Elastic Beanstalk Environment task's Update action
The Swap action enables Deploying Versions with Zero Downtime by swapping the URLs between two environments - this concept is also referred to as a Blue-Green deployments.