Quality of Service (QoS) What is Quality of Service in Networking? Quality of Service (QoS) is a networking feature that prioritises certain types of data traffic to ensure optimal performance for critical applications and services. Explanation QoS manages bandwidth allocation, reduces latency, and prevents packet loss, making it essential for applications like video conferencing, VoIP, and online gaming. Practical Example of Quality of Service An enterprise implements QoS to prioritise video conferencing traffic, ensuring clear and uninterrupted communication during meetings.