Microsoft Fairwater Atlanta datacenter operational; links to Wisconsin via 120k+ miles of AI WAN

Microsoft/Fairwater AI Superfactory

Microsoft's Fairwater Atlanta datacenter became operational in October 2026, linking to its Wisconsin site to form a distributed AI training superfactory. The two sites connect via 120,000+ miles of dedicated AI WAN fiber and house NVIDIA GB200 NVL72 systems. The infrastructure trains frontier-scale models with hundreds of trillions of parameters.

• Fairwater combines Wisconsin (Mount Pleasant) and Georgia (Atlanta) datacenters into single training machine.
• Sites separated by ~700 miles, connected by 120,000+ miles of owned and repurposed fiber AI WAN.
• Hosts NVIDIA GB200 NVL72 racks with Blackwell GPUs and liquid cooling for efficiency.
• Designed to train frontier-scale models with hundreds of trillions of parameters using coordinated gradient synchronization.