# Supervisor

> The part of Home Assistant OS that runs Home Assistant Core and apps, each in its own container, and handles their updates and backups.

Source: https://contributors.home-assistant.io/glossary/supervisor/

- In code: `home-assistant/supervisor`, `hassio`

The Supervisor has an API, the [Supervisor API](https://contributors.home-assistant.io/glossary/supervisor-api/), that Core, the frontend, and apps use to install updates, make backups, and manage apps.

## Related terms

- [Home Assistant OS](https://contributors.home-assistant.io/glossary/home-assistant-os/): The operating system made to run Home Assistant, with the Supervisor, apps, and backups. The recommended way to install Home Assistant.
- [App](https://contributors.home-assistant.io/glossary/app/): Extra software that runs next to Home Assistant on Home Assistant OS, like an MQTT broker or a file editor.
- [Supervisor API](https://contributors.home-assistant.io/glossary/supervisor-api/): The REST API of the Supervisor, that Home Assistant Core, the command line, and apps use to manage the system, apps, backups, and updates.
- [Supervisor plugin](https://contributors.home-assistant.io/glossary/supervisor-plugin/): A container the Supervisor runs for the system itself, like DNS or audio, that Home Assistant Core and apps share.
- [Resolution center](https://contributors.home-assistant.io/glossary/resolution-center/): The part of the Supervisor that finds problems with the system, like low disk space, and suggests fixes for them.