Deep system-level knowledge of AI accelerators, CPU/GPU architectures, interconnect fabrics (PCIe, CXL, UAL), memory hierarchies, storage subsystems, and rack-level system design (power delivery, cooling, cabling, rack orchestration). T. rack product performance post-launch-covering system-level metrics like power efficiency, thermal headroom, and network utilization-iterating on features, pricing, and lifecycle management to maximize ROI and market share.