Arun Dalli, a capacity engineering leader at ServiceNow and Meta, works at the intersection of seemingly infinite cloud demand and the very finite realities of power, space, and hardware. By exposing hidden inefficiencies—what he calls “digital ghost towns”—and replacing political resource requests with transparent, data-driven models, he has helped reclaim millions of dollars in underutilized capacity. As generative AI pushes data centers to their physical limits, Dalli argues that the future of hyperscale computing will depend on engineers who can manage scarcity with the same sophistication that product teams apply to innovation.