# Use Amazon IoT Greengrass stream manager in Amazon IoT SiteWise
<a name="greengrass-stream-manager"></a>

Amazon IoT Greengrass stream manager is an integration feature that facilitates the transfer of data streams from local sources to the Amazon Cloud. It acts as an intermediary layer that manages data flows, enabling devices operating at the edge to gather and store data before it is sent to Amazon IoT SiteWise, for further analysis and processing.

Add a data destination by configuring a local source on the Amazon IoT SiteWise console. You can also use stream manager in your custom Amazon IoT Greengrass solution to ingest data to Amazon IoT SiteWise.

For more information about how to **ingest data using stream manager** in a custom Amazon IoT Greengrass solution, see the following topics in the *Amazon IoT Greengrass Version 2 Developer Guide*:
+ [What is Amazon IoT Greengrass?](https://docs.amazonaws.cn/greengrass/v2/developerguide/)
+ [Manage data streams on the Amazon IoT Greengrass core](https://docs.amazonaws.cn/greengrass/v2/developerguide/manage-data-streams.html)
+ [Exporting data to Amazon IoT SiteWise asset properties](https://docs.amazonaws.cn/greengrass/v2/developerguide/stream-export-configurations.html#export-to-iot-sitewise)