A developer is updating an application deployed on AWS Elastic Beanstalk. The new version is incompatible with the old version. To successfully deploy the update, a full cutover to the new, updated version must be performed on all instances at one time, with the ability to roll back changes in case of a deployment failure in the new version.
How can this be performed with the LEAST amount of downtime?
A . Use the Elastic Beanstalk All at once deployment policy to update all instances simultaneously.
B . Perform an Elastic Beanstalk Rolling with additional batch deployment.
C . Deploy the new version in a new Elastic Beanstalk environment and swap environment URLs.
D . Perform an Elastic Beanstalk Rolling deployment.
Answer: D
Explanation:
Elastic Beanstalk has rolled out a couple of features over the last year that make zero-downtime deployment.
Reference: https://rollout.io/blog/batch-deployment-in-aws-elastic-beanstalk/
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