# System Ability Manager<a name="EN-US_TOPIC_0000001115719369"></a>

## Introduction<a name="section11660541593"></a>

The System Ability Manager (SAMGR) subsystem implements the system service framework. It provides the functions of starting, registering, and querying system services, and querying cross-device distributed system services.


## System Architecture<a name="section13587185873516"></a>

**Figure 1** SAMGR architecture<a name="fig4460722185514"></a>


![](figures/samgr-architecture.png)

## Directory Structure<a name="section161941989596"></a>

```
/foundation/systemabilitymgr
├── safwk                       # System ability framework
├── samgr                       # System ability manager
├── safwk_lite                  # Lightweight foundation process
└── samgr_lite                  # Lightweight system ability manager
```

## Repositories Involved<a name="section1371113476307"></a>

**SAMGR**

[systemabilitymgr\_safwk](https://gitee.com/openharmony/systemabilitymgr_safwk)

[systemabilitymgr\_samgr](https://gitee.com/openharmony/systemabilitymgr_samgr)

[systemabilitymgr\_safwk\_lite](https://gitee.com/openharmony/systemabilitymgr_safwk_lite)

[systemabilitymgr\_samgr\_lite](https://gitee.com/openharmony/systemabilitymgr_samgr_lite)