What is Project Aion? Inside Microsoft’s secret agentic Copilot OS incubation project that runs on Windows and Android
windowscentral.com Jul 3, 2026

What is Project Aion? Inside Microsoft’s secret agentic Copilot OS incubation project that runs on Windows and Android

AI-summarised brief · reviewed before publication

Microsoft has developed a working prototype of a platform-agnostic operating system, codenamed Aion, which runs on top of Windows or Android. Aion is built using web technology and features a modified version of the Edge web browser. The OS includes a desktop-like interface with a Start menu, Taskbar, and cascading windows, and is capable of running web apps and websites with tight integration with Windows 365. The project also includes a third compatible OS, Win3, which offers a lighter OS experience with faster boot times and better security.

💡 Why It Matters

  • · Aion's agentic AI experiences and web-based interface could revolutionize the way users interact with their devices, potentially marking a significant shift away from traditional desktop operating systems.