1# IoT Subsystem<a name="EN-US_TOPIC_0000001085756528"></a> 2 3- [Introduction](#section11660541593) 4- [Directory Structure](#section1464106163817) 5- [Repositories Involved](#section1718733212019) 6 7## Introduction<a name="section11660541593"></a> 8 9The IoT subsystem provides samples for integrating third-party SDKs. For details, see [Third-Party SDK Integration](https://device.harmonyos.com/en/docs/develop/demo/oem_device_wifi_sdk-0000001054412155). 10 11## Directory Structure<a name="section1464106163817"></a> 12 13``` 14domains/iot/ # IoT subsystem 15└── link 16 ├── BUILD.gn # Build script 17 ├── demolink # Code for adapting third-party APIs to OpenHarmonyOS 18 │ ├── BUILD.gn 19 │ ├── demosdk_adapter.c 20 │ └── demosdk_adapter.h 21 └── libbuild # Code for building third-party SDKs 22 ├── BUILD.gn 23 ├── demosdk.c 24 └── demosdk.h 25``` 26 27## Repositories Involved<a name="section1718733212019"></a> 28 29iot\_link 30 31