AWS DevOps Engineer Professional Practice Test

What are the options for deployments available in Elastic Beanstalk?

1. All at once, Blue/Green, Canary

2. Rolling, Rolling with additional batch, Immutable

3. Swarm, Immutable, High Availability

4. Promote, Rollback, Gray release

The correct answer is: Rolling, Rolling with additional batch, Immutable

In Elastic Beanstalk, the available deployment strategies are designed to provide flexibility and minimize downtime during application updates. The rolling deployment method updates instances in batches, ensuring that a portion of the application remains live during the process, thus enhancing availability. The rolling with additional batch strategy builds on this by allowing for a brief overlap of the old and new versions, which ensures additional capacity during deployment, preventing potential capacity issues. Lastly, immutable deployments create a new environment with the updated application version, and once it is healthy, it swaps over to replace the previous version. This method provides a robust way to ensure that any issues with the new deployment do not affect the current running environment. These deployment methods enable organizations to choose a strategy that best fits their needs, considering factors like uptime, risk tolerance, and the nature of the application. The choice reflects a deep understanding of deployment methodologies and emphasizes the importance of minimizing downtime and ensuring rollbacks are straightforward and safe.