# IoT class

> How an integration gets its data: locally or from the cloud, and by polling or push. Set in the manifest.

Source: https://contributors.home-assistant.io/glossary/iot-class/

- In code: `"iot_class" in manifest.json`

The IoT class tells users what to expect from an integration before they set it up, like whether it keeps working without internet. The most common ones are `local_push`, `local_polling`, `cloud_push`, and `cloud_polling`.

## Related terms

- [Manifest](https://contributors.home-assistant.io/glossary/manifest/): The `manifest.json` file of an integration: its domain, name, integration owners, requirements, and how it can be discovered.
- [Polling](https://contributors.home-assistant.io/glossary/polling/): Asking a device or service for new data on an interval. The opposite is push, where the device sends updates when something changes.