While the term ’spine-and-leaf‘ is well-understood by network designers and gaining traction in cabling circles, there is more behind the new architecture which is rapidly driving infrastructure decisions in large modern data centres.   When supporting hyperscale, big data, and cloud data centres, traditional expectations of achieving connectivity simply via patch cables, modest-capacity MPO/MTP trunks and patch panels evaporate. The challenge is to provision, add, and support high-density, bandwidth-greedy applications constantly. The number of connections is not simply the number of ports in a network but more a combination of transmission type, redundancy, subscription rates and switch configuration.   This article explores the contributing factors in high fibre count trunk selection and new options and skills available to deliver the connectivity needs of hyperscale deployments.   Data centre build-outs continue to grow, driven by the increase in bandwidth demands and changes in network architectures. As a result, time-to-market needs for the data centre production environment continue to compress.   According to LightCounting research, 10GbE switching was recently dwarfed b...