Microsoft is embarking on a transformative journey by reuniting its Windows engineering teams into a singular organization, now led by Pavan Davuluri, the President of Windows and Devices. This strategic consolidation, announced internally, marks a significant shift from a 2018 division aimed at enhancing the development of an AI-driven “Agentic OS.”
Streamlining Development
The internal memo, shared on a Tuesday in 2025, outlined the merging of the Windows client and server teams, a move intended to sharpen focus and streamline development processes. Davuluri emphasized the importance of this unification, stating,
“Moving the teams working on Windows client and server together into one organization brings focus to delivering against our priorities.”
This initiative seeks to dismantle long-standing organizational silos, fostering a more efficient and integrated engineering structure for Microsoft’s flagship operating system.
This decision effectively reverses a controversial reorganization from seven years ago, which followed the departure of Terry Myerson, the former head of Windows. After his exit, Microsoft split its Windows engineering teams, relocating core platform engineers to the Azure cloud division. This separation led to a distinct divide between the foundational aspects of the operating system and the teams responsible for user-facing features, resulting in internal fragmentation that complicated alignment between core platform evolution and user experience.
In an effort to bridge this gap, a “Windows + Devices” division was created in 2020 under Panos Panay, who advocated for closer coordination between software and hardware. Panay successfully reclaimed some developer teams from Azure, yet the core engineering groups remained distinct. The recent reorganization announced by Davuluri completes the reunification process initiated by Panay, consolidating the majority of Windows development under his leadership, with only a few low-level teams, such as those focused on the kernel and Windows Subsystem for Linux (WSL), remaining within the Azure Core organization.
AI-Driven Future
The primary impetus behind this comprehensive reunification is Microsoft’s ambitious push into artificial intelligence. Davuluri linked the new organizational structure to the company’s forward-looking product roadmap, stating, “this reorg will help deliver our vision of Windows as an Agentic OS.” This concept envisions a future iteration of Windows that operates proactively and intelligently, anticipating user needs and automating complex tasks, thereby evolving the user interface beyond traditional interactions.
Achieving this sophisticated functionality necessitates a seamless integration between the core operating system, AI models, and user-facing applications—an integration that becomes increasingly challenging when engineering teams are divided by organizational boundaries.
This reorganization is part of a broader trend at Microsoft aimed at centralizing and focusing the company’s extensive AI initiatives. This urgency reflects CEO Satya Nadella’s earlier remarks about the rapid impact of AI, suggesting that “thirty years of change is being compressed into three years.” A pivotal step in this consolidation was the establishment of the CoreAI division in January 2025, led by Jay Parikh, which unified various AI tools and platforms, including GitHub Copilot and Azure AI. The strategy advanced further in August 2025, when the GitHub organization was integrated under the CoreAI umbrella following the departure of its CEO, Thomas Dohmke.
By reuniting its Windows engineering teams, Microsoft is strategically aligning its most widely used product with its central AI strategy, positioning the operating system as a vital conduit for its most advanced AI technologies and ensuring its relevance for the coming decade.
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