Whats inside
A primer on the eXtra-dense Pluggable Optics (XPO) format and how it solves the faceplate bottleneck.
An examination of the three-way trade-off between speed, power, and modularity that determines the choice between CPO and XPO at each generation.
An analysis of why CPO and XPO will coexist in scale-out at 1.6T but diverge as lane speeds climb to 3.2T and beyond.
A conclusion on where each format lands across scale-up, scale-out, and scale-across networking strategies.