You have created a new Elastic Beanstalk environment to be used as a pre-production stage for load testing new code version. Since code changes are committed on a regular basis, you sometimes need to deploy new versions 2 to 3 times each day. You need to deploy a new version as quickly as possible in a cost-effective way to give ample time for the QA team to test it. Which of the following implementations is suited for this scenario?