Description: Service differentiation is the practice of providing different levels of service to various customers or applications, adapting the quality and availability of resources based on the specific needs of each. This approach allows organizations to optimize resource usage, ensuring that critical applications or the most important customers receive preferential treatment. Service differentiation is based on the premise that not all users or applications require the same level of attention or quality, enabling companies to prioritize traffic and manage load more efficiently. In the context of Quality of Service (QoS), this practice translates into the implementation of policies that regulate bandwidth, latency, and packet loss, ensuring that time-sensitive applications operate without interruptions. Furthermore, service differentiation can enhance customer satisfaction, as it allows companies to offer a more personalized service tailored to each user’s expectations, which can result in greater customer loyalty and retention.