app/code/Magento/Backup/README.md
This module allows administrators to perform backups and rollbacks. Types of backups include system, database and media backups. This module relies on the Cron module to schedule backups.
This module does not affect the storefront.
For more information about this module, see Backups.
Extension developers can interact with this module. For more information about the extension mechanism, see Plugins.
The dependency injection mechanism enables you to override the functionality of this module.
This module introduces the following layouts and layout handles in the view/adminhtml/layout directory:
backup_index_block
backup_index_disabled
backup_index_grid
backup_index_index
For more information about layouts, see the Layout documentation.
For information about significant changes in patch releases, see Release information.