At planet scale, managing millions of bare‑metal servers requires end‑to‑end, automation‑first lifecycle management. This talk surveys the core challenges—heterogeneous hardware, high‑throughput provisioning, rapid error detection and remediation, safe kernel/firmware/OS maintenance, and sustainable decommissioning. The key message: at planet scale, reliability is engineered through automation, observability, and governance, turning manual operations into predictable, auditable, self‑healing processes.