AI Factories are some of the most technologically complex operational environments ever created. Hundreds of thousands of GPUs, NVIDIA Spectrum-X Ethernet scale-out, scale-across and scale-in fabrics, NVIDIA NVLink scale-up fabrics, distributed schedulers, and multi-week training runs operate in continuous lockstep.These layers function as one production system even when different teams own their telemetry. In synchronous distributed training, a job advances at the pace of its slowest rank. One degraded GPU, interface, storage device, or switch path can waste useful time across many healthy resources.