High-speed networking refers to interconnect technologies and protocols engineered to sustain very high data-transfer rates, typically tens to hundreds of gigabits per second, with minimal latency, spanning link types such as fibre optics, InfiniBand and high-bandwidth Ethernet. It is a prerequisite wherever large data volumes must move between compute nodes, sensors or accelerators without becoming a system bottleneck. Applications range from ASIC-accelerated pipelines to synchronised multi-camera motion capture rigs.