Technology & Science

AWS Debuts “AI Factories” and Trainium3 3-nm Chip, Bringing Sovereign Agentic AI On-Prem

On 2 Dec 2025 at re:Invent, AWS rolled out fully-managed on-prem “AI Factories,” the 4×-faster Trainium3 chip, and a slate of agentic-AI integrations, marking its first push to run AWS-operated AI regions inside customer datacenters.

By Priya Castellano

Focusing Facts

  1. AI Factories will install AWS racks with Trainium3 and Nvidia B200/GB200 GPUs in customer sites, an architecture first piloted for Saudi Arabia’s 150,000-chip “AI Zone.”
  2. Trainium3, built on a 3-nm process, delivers 4× compute and energy efficiency over Trainium2 and is already sampling in 144-chip UltraServers.
  3. AWS added 3.8 GW of data-center power capacity in 2024, the largest single-year expansion in its history.

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