"If your application uses the EC2/On-Premises compute platform, the AppSpec file must be a YAML-formatted file named appspec.yml and it must be placed in the root of the directory structure of an application's source code. Otherwise, deployments fail."
https://docs.aws.amazon.com/codedeploy/latest/userguide/reference-appspec-file.html#appspec-reference-server
BD
Option A is not necessarily incorrect, as the application specification file can indeed be a JSON-formatted file named "appspec.json". However, the question asks for which properties are required to ensure that the software deployments do not fail, and simply having a JSON-formatted file with the correct name is not enough to guarantee success.
The application specification file must also include the necessary lifecycle event hooks and deployment instructions to ensure that the application is deployed correctly. These instructions and hooks are typically defined using YAML syntax in the appspec.yml file.
Therefore, while having an appspec.json file is a valid option, it is not a required property to ensure successful software deployments using AWS CodeDeploy.
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