# Application example with extensions
<a name="platforms-linux-extend.example"></a>

The following example demonstrates an application source bundle with several extensibility features that Elastic Beanstalk Amazon Linux 2 and Amazon Linux 2023 platforms support: a `Procfile`, `.ebextensions` configuration files, custom hooks, and proxy configuration files.

```
~/my-app/
|-- web.jar
|-- Procfile
|-- readme.md
|-- .ebextensions/
|   |-- options.config        # Option settings
|   `-- cloudwatch.config     # Other .ebextensions sections, for example files and container commands
`-- .platform/
    |-- nginx/                # Proxy configuration
    |   |-- nginx.conf
    |   `-- conf.d/
    |       |-- custom.conf
    |       `-- elasticbeanstalk/
    |           `-- server.conf
    |-- hooks/                # Application deployment hooks
    |   |-- prebuild/
    |   |   |-- 01_set_secrets.sh
    |   |   `-- 12_update_permissions.sh
    |   |-- predeploy/
    |   |   `-- 01_some_service_stop.sh
    |   `-- postdeploy/
    |       |-- 01_set_tmp_file_permissions.sh
    |       |-- 50_run_something_after_app_deployment.sh
    |       `-- 99_some_service_start.sh
    `-- confighooks/          # Configuration deployment hooks
        |-- prebuild/
        |   `-- 01_set_secrets.sh
        |-- predeploy/
        |   `-- 01_some_service_stop.sh
        `-- postdeploy/
            |-- 01_run_something_after_config_deployment.sh
            `-- 99_some_service_start.sh
```

**Note**  
Some of these extensions aren't supported on Amazon Linux AMI platform versions (preceding Amazon Linux 2).