---
UID: TP:qos
ms.assetid: 226c23a3-f2d6-320b-87c9-2bb3973f6073
ms.date: 01/11/2019
ms.keywords: 
ms.topic: conceptual
---

# Quality of Service (QOS)

## -description

Overview of the Quality of Service (QOS) technology.

To develop Quality of Service (QOS), you need these headers:

 * [infocard.h](../infocard/index.md)
 * [lpmapi.h](../lpmapi/index.md)
 * [ntddpsch.h](../ntddpsch/index.md)
 * [qos.h](../qos/index.md)
 * [qos2.h](../qos2/index.md)
 * [qosobjs.h](../qosobjs/index.md)
 * [qospol.h](../qospol/index.md)
 * [qossp.h](../qossp/index.md)
 * [traffic.h](../traffic/index.md)
 * [winsock2.h](../winsock2/index.md)

For programming guidance for this technology, see:
* [Quality of Service (QOS)](https://docs.microsoft.com/previous-versions/windows/desktop/qos)

