# Quality of Service Overview

The quality of service (QoS) feature enables your E Series router to distinguish traffic with strict timing requirements from traffic that can tolerate delay, jitter, and loss.

QoS topics are discussed in the following sections:

- QoS on the E Series Router Overview
- QoS Audience
- QoS Platform Considerations
- QoS Terms
- QoS Features
- Configuring QoS on the E Series Router
- QoS References