Exam AWS Certified Developer - Associate DVA-C02 topic 1 question 109 discussion

The answer is D. "All at once – The quickest deployment method." https://docs.aws.amazon.com/elasticbeanstalk/latest/dg/using-features.deploy-existing-version.html

The "All at once" deployment method deploys the new version of the application to all instances simultaneously. It updates all instances of the environment in a short period of time, resulting in the fastest overall deployment.

This deployment method deploys the new version of the application to all instances in the environment simultaneously A) Eliminated - In an immutable deployment, Elastic Beanstalk creates a new environment with the new version of the application and swaps it with the old one once it's ready. This method ensures that there is no impact on the current environment during the deployment, but it takes longer due to the creation of a new environment and the time needed for verification. B) Eliminated - In a rolling deployment, Elastic Beanstalk updates a batch of instances one at a time while keeping the others running. This method minimizes downtime but takes longer than "all at once" since it updates instances in batches. C) Eliminated -

D is the correct answer.