👉 QoS (Quality of Service) refers to a service level agreement that defines what services are available and how they will be delivered, ensuring the highest possible levels of reliability, availability, and efficiency for users. It is used in telecommunications networks to define the limits on data transmission and network resources such as bandwidth, latency, and capacity. QoS is crucial for maintaining high-quality service throughout a network, optimizing performance, minimizing costs, and enabling seamless communication between different systems.
