> For the complete documentation index, see [llms.txt](https://apidocs.alphax.cloud/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://apidocs.alphax.cloud/mqtt/publishing-data.md).

# Publishing Data

- [MQTT Publish Format V1](https://apidocs.alphax.cloud/mqtt/publishing-data/mqtt-publish-format-v1.md): MQTT Publish format V1 is the compressed format, useful for data constrained devices. Data remains in byte array and decoded in AlphaX cloud.
- [MQTT Publish Format V2](https://apidocs.alphax.cloud/mqtt/publishing-data/mqtt-publish-format-v2.md): MQTT Publish format V2 is a user friendly, human readable JSON package for sending data to a device on AlphaX Cloud.