Microsoft wants to make it easier for developers to build AI-powered apps on Windows devices. On Monday during its Build 2025 conference, Microsoft announced Windows AI Foundry, a rebranding and expansion of the Windows Copilot Runtime service the company launched last May. Microsoft describes Windows AI Foundry as a “unified platform for local AI development” — a way to fine-tune, optimize, and deploy the AI models underpinning Windows apps. Microsoft increasingly sees AI, whether running local...