# IoT Subsystem
- [Introduction](#section11660541593)
- [Directory Structure](#section1464106163817)
- [Repositories Involved](#section1718733212019)
## Introduction
The IoT subsystem provides samples for integrating third-party SDKs.
## Directory Structure
```
domains/iot/ # IoT subsystem
└── link
├── BUILD.gn # Build script
├── demolink # Code for adapting third-party APIs to OpenHarmony
│ ├── BUILD.gn
│ ├── demosdk_adapter.c
│ └── demosdk_adapter.h
└── libbuild # Code for building third-party SDKs
├── BUILD.gn
├── demosdk.c
└── demosdk.h
```
## Repositories Involved
iot\_link