How does a famously decentralized company — where every business unit operates autonomously — navigate the AI revolution? Nucor experienced viral adoption of AI tooling, leading to a sprawl of citizen-developed applications trapped on local PCs with no governance, no master data, and no software engineering or infrastructure standards. This session tells the story of what happened next — Lightspeed, a rapid-response program assembling Nucor's best minds to build enterprise-grade architecture standards, orchestrated AI agents, and a reimagined SDLC at startup speed.