In the root of the application source code directory structure
In the bin folder along with all the complied code
In an S3 bucket
In the same folder as the application configuration files
Explanations:
Theappspec.ymlfile must be placed in the root of the application source code directory structure. AWS CodeDeploy looks for this file to define deployment instructions, including hooks and file locations, when the deployment process begins.
Theappspec.ymlfile should not be placed in thebinfolder, as it is not related to compiled code. It needs to be at the root level of the source code directory to be recognized by CodeDeploy.
Placing theappspec.ymlfile in an S3 bucket is not correct. The file should be in the root of the directory structure of the source code, not in a storage location like S3.
While theappspec.ymlfile is related to deployment configurations, it should not be placed in the same folder as the application configuration files. It needs to be at the root of the application source code directory.
From my point of view, the answer is:
In the root of the application source code directory structure