What type of network traffic requires QoS?

Quality of Service (QoS) is essential for network traffic that is sensitive to delays, jitter, and packet loss, such as voice over IP (VoIP), video conferencing, and online gaming. These applications require consistent bandwidth and low latency to function effectively. Additionally, streaming media and real-time data services also benefit from QoS to ensure a smooth user experience. Implementing QoS helps prioritize this critical traffic over less sensitive data, like file downloads or web browsing.