# Platform

> How an integration provides one type of entity, like the `light` platform of the Hue integration. Also used for integration platforms, files that plug into another integration.

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

- In code: `Platform.LIGHT`, `light.py`
- Also: platforms, entity platform, integration platform

An **entity platform** is the part of an integration that provides one type of entity. The Hue integration has a `light.py` for its lights and a `sensor.py` for its sensors: its `light` and `sensor` platforms.

An **integration platform** is a file that lets an integration plug into another one, like `diagnostics.py` for [diagnostics](https://contributors.home-assistant.io/glossary/diagnostics/) or `repairs.py` for repairs.

## Related terms

- [Integration](https://contributors.home-assistant.io/glossary/integration/): A package of code that connects Home Assistant to a device, service, or protocol, or adds a feature like automations.
- [Entity](https://contributors.home-assistant.io/glossary/entity/): One thing Home Assistant can show, measure, or control, like a light, a temperature sensor, or a switch. Every entity has a state.
- [Domain](https://contributors.home-assistant.io/glossary/domain/): The short, unique identifier of an integration, like `hue` or `light`. It is also the first part of every entity ID.