Inside Microsoft’s Project Solara: Why the Company Chose Android for Its Agent-First Future

The Android bet: MDEP instead of Windows

The specific operating system is called the Microsoft Device Ecosystem Platform (MDEP), which is built on the Android Open Source Project (AOSP) . Microsoft cited Android's strength on lower-cost, lower-power hardware and its broad peripheral ecosystem as key reasons for the choice . The company was explicit: it has no plans to sell Solara devices itself. Instead, it wants OEMs and hardware partners to license the platform and build their own commercial products .

The reference hardware: desk hub and wearable badge

To give partners a starting point, Microsoft created two working concept devices .

• Desk Concept: A smart display hub resembling an Amazon Echo Show, running on MediaTek silicon. It uses facial recognition for authentication and immediately surfaces AI agents for tasks like inventory lookups, shift scheduling, or responding to customer questions. Connect a monitor, and it doubles as a gateway to a full Windows machine running in the cloud via Windows 365 .
• Badge Concept: A wearable badge resembling an employee ID card, powered by a Qualcomm chip. Equipped with a camera, fingerprint sensor, and 5G connectivity, it is designed for hands-free, always-on agent access in retail, warehouse, or healthcare settings. Pressing the button starts a conversation, transcribes it instantly, and lets the camera see what the user sees so the agent can provide context-aware help .

Both designs serve as reference blueprints for hardware makers across industries like healthcare, retail, hospitality, and financial services .

Who’s testing it first

Microsoft has named five enterprise partners that will begin piloting devices based on Project Solara in the coming months: Best Buy, CVS Health, Levi’s, Target, and AccuWeather . Hundreds of Microsoft employees are already testing the hardware internally . The pilots will explore agent-first workflows such as real-time inventory management, shift coordination, and weather-informed retail operations .

The bigger picture from Build 2026

Project Solara wasn't the only major news. It arrived as part of a sweeping agentic-AI push designed to place autonomous software at the center of Microsoft’s ecosystem.

• Project Polaris: Microsoft’s new in-house AI coding model is set to replace GPT-4 Turbo as the default reasoning engine inside GitHub Copilot starting in August 2026 .
• Windows Agent Runtime and Agent Store: Native agent APIs are being embedded directly into Windows 11, accompanied by a store that offers developers an 85% revenue share. Adobe and Zoom have already signed on .
• Autonomous agents: Microsoft introduced a new class of long-running agents called Autopilots. The first, named Scout, can monitor an inbox and Teams sessions continuously, acting as a persistent background assistant .
• New AI models: The company launched seven first-party models covering image, transcription, voice, and coding, including a flagship reasoning model called MAI-Thinking-1 .
• Microsoft IQ: A context layer now generally available across Copilot, Foundry, and Copilot Studios. It feeds agents workplace data (Work IQ from Microsoft 365), business intelligence (Fabric IQ), and live web information (Web IQ) .
• Agent 365 SDK and Azure Agent Mesh: A free SDK for building and governing agents reached general availability, along with a federated multi-agent execution layer .
• Pay-as-you-go pricing: Copilot Credits debuted at $0.01 per credit or via prepaid packs, creating a consumption model for agent workloads separate from per-user Copilot subscriptions .

The combination of these announcements reveals an unambiguous corporate priority: Microsoft is betting that an ecosystem of AI agents—running across phones, badges, desktops, and cloud PCs—will become the next foundation of enterprise computing. Project Solara is the unexpected hardware piece of that puzzle, built on Android to get there faster.