Registering plugins and backend modules 

An Extbase extension can register frontend plugins, backend modules, both, or neither — depending on what it needs to deliver.

• A frontend plugin renders content on a page. Editors add it as a content element and visitors see the output in the frontend.
• A backend module adds a section to the TYPO3 backend for editors or administrators to manage data.

Each registration requires a small amount of PHP and configuration files loaded during bootstrap — no database records, no install steps.