The Definitive Guide to
AI Data Centers
A free, book-length engineering reference: 166 chapters covering the full lifecycle — siting, power, cooling, networking, financing, operations — that you can read end-to-end or enter by problem. Vendor-neutral, at practitioner depth, with every volatile number date-stamped and sourced.
166 chapters330 decision tables1,328 sourced figures17 parts + appendices
New hereStart with Part 0 →What this guide is, how to read it, and the vocabulary. Ten minutes, then go anywhere.Have a problemFind your chapter ↓Seventeen parts in lifecycle order — jump straight to siting, cooling, fabrics, or economics.Need a numberOpen the register →1,328 dated, sourced figures with revision history. Significant moves land in the updates.
The guide, part by part
0Foundations & How to Use This GuideHow the guide works, its conventions, and where to start.1Strategy, Workload Archetypes & EconomicsBuild vs buy vs rent, workload shapes, unit economics.2Project Delivery, Schedule, Procurement, Contracts & RiskContracts, long-lead equipment, schedule risk.3Site Selection, Power Procurement & PermittingInterconnection queues, tariffs, land, water, permits.4Electrical & Energy InfrastructureGrid to busbar: substations, UPS, on-site generation.5Cooling & Thermal ManagementAir vs liquid, direct-to-chip, heat rejection, water.6The Building: Civil, Structural, Fire/Life-Safety & Construction ExecutionCivil, structural, fire/life-safety, build sequencing.7Compute, Silicon & System IntegrationGPUs and accelerators, racks, integration choices.8Networking, Fabrics & OpticsTopologies, InfiniBand vs Ethernet, optics roadmaps.9Storage & DataCheckpointing, filesystems, data pipelines.10Software, Orchestration & Service DeliveryScheduling, utilization, $/GPU-hr service models.11SecurityPhysical + cyber, supply chain, confidential computing.12Reliability, Resilience & StandardsRedundancy math, failure taxonomy, standards.13Commissioning & Go-LiveL1–L5 commissioning, integration testing, handover.14Day-2 Operations, Upgrades & LifecycleOperating, upgrading, depreciating the fleet.15Sustainability & EfficiencyPUE/WUE, carbon accounting, heat reuse.16Trends, Roadmaps & the FutureWhere the subsystems are headed.AAppendices & Reference DataLookup tables, standards index, reference data.