When appgen initializes a new holistic app service project monorepo for the first time it copies the contents of the @encapsule/holistic/SOURCES/* directory tree into the new app service project monorepo's ./SOURCES/* directory tree.
This includes the ./SOURCES/DEPLOYMENT/aws-elastic-beanstalk/ directory that contains a baseline AWS Elastic Beanstalk configuration holistic app service runtime package deployments to Amazon Web Services cloud.
It's this EB configuration that is currently copied into a holistic app service deployment package when a developer evaluates make appServiceDeployment target.