Real-time web applications such as streaming, cloud gaming, social media, and emerging applications like the metaverse, generative AI, and cryptographic services require end-to-end networks to support the era of the “tactile internet.” In addition to upgrading network capacity, network operators must ensure their networks are optimised for low latency to provide a high-quality user experience. This paper explores the direct relationship between network latency and Quality of Experience (QoE) and the various technologies available for managing network latency. We examine key latency components, including idle and working latency, and their impact on user experience for diverse scenarios such as web browsing, video conferencing, and augmented reality. Through detailed analysis, we discuss the latency implications of transport protocols, serialisation delay, propagation delay, routing delay, queuing delay, and medium access delay, along with active and passive methods for measuring latency. Moreover, we highlight advanced technologies and strategies, including Wi-Fi 7 features, Low Latency Low Loss Scalable throughput (L4S), and Quality of Service (QoS) mechanisms, aimed at optimising latency in both wired and wireless networks. By addressing these aspects, this paper provides a comprehensive framework for network latency management, enhancing the performance of current and emerging applications, and ultimately improving overall QoE.