# Concepts

- [What are WebXR Device APIs?](/mixed-reality-docs/webxr-lessons/introduction-to-webxr-device-apis/concepts/what-are-webxr-device-apis.md)
- [Which Devices are Compatible with WebXR?](/mixed-reality-docs/webxr-lessons/introduction-to-webxr-device-apis/concepts/which-devices-are-compatible-with-webxr.md)
- [Which Browsers support WebXR?](/mixed-reality-docs/webxr-lessons/introduction-to-webxr-device-apis/concepts/which-browsers-support-webxr.md)
- [What is the Lifecycle of a WebXR Application?](/mixed-reality-docs/webxr-lessons/introduction-to-webxr-device-apis/concepts/what-is-the-lifecycle-of-a-webxr-application.md)
- [What is XRReferenceSpaceType?](/mixed-reality-docs/webxr-lessons/introduction-to-webxr-device-apis/concepts/what-is-xrreferencespacetype.md)