Scaling AI for silicon - Engineering@Microsoft (opens in new tab)
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Engineering and algorithmic interventions for multimodal post-training at Microsoft scale (opens in new tab)
Aditya Challapally leads post-training research and infrastructure for Copilot agent capabilities that process millions of multimodal interactions. This post builds on the diagnostics from Diagnosing instability in production-scale agent reinforcement learning with the engineeri…
How we built the Microsoft Learn MCP Server (opens in new tab)
When we launched the Microsoft Learn Model Context Protocol (MCP) Server in June 2025, our goal was simple: make it effortless for AI agents to use trusted, up-to-date Microsoft Learn documentation. GitHub Copilot and other agents are increasingly common, and they need to be abl…
Diagnosing instability in production-scale agent reinforcement learning (opens in new tab)
On January 28, 2026, Hugging Face announced that they have upstreamed the Post-Training Toolkit into TRL as a first-party integration, making these diagnostics directly usable in production RL and agent post-training pipelines. This enables closed-loop monitoring and control pat…
The Interaction Changes Everything: Treating AI Agents as Collaborators, Not Automation (opens in new tab)
At Microsoft Ignite 2025, I joined Amanda Silver (CVP, Apps & Agents + 1ES GM) and Karl Piteira (1ES PM lead) on stage to talk about Microsoft’s transformation into an AI-driven engineering organization. The big narrative was about agents as partners in the development lifecycle…
Enhancing Code Quality at Scale with AI-Powered Code Reviews (opens in new tab)
At Microsoft, we are constantly looking for ways to improve developer productivity and code quality. One of our most impactful innovations in this space is AI-powered code review assistant — an AI tool that augments pull request (PR) reviews. This AI Assistant started as an inte…
How Microsoft Engineers Build AI: Learn about scalable RAG-enabled AI Apps (opens in new tab)
For developers, the emphasis on building intelligence into apps has never been clearer. Over the next three years, 92% of companies plan on investing in AI to achieve business outcomes like enhancing productivity and delivering better customer service. At Microsoft, developers a…
Dev Box Ready-To-Code Dev Box images template (opens in new tab)
At Ignite, Microsoft just announced Team customizations and imaging for Microsoft Dev Box. The goal for this feature is to improve developer productivity and happiness by reducing the time it takes to setup and maintain development environments. Team customizations began as an i…
Common annotated security keys (opens in new tab)
In April 2021, GitHub announced changes to their security token format that significantly enhanced security. The improvement leveraged two straightforward techniques: a fixed signature in the generated token and a checksum – both of which are highly effective in eliminating fals…
Managed DevOps Pools – The Origin Story (opens in new tab)
Microsoft has over 100,000 software engineers working on software projects of all sizes. Some projects have thousands of engineers working in the same source repository, while others have thousands of individual repositories. Microsoft can be viewed as an organization of organiz…
Developing with Accessibility in Mind at Microsoft (opens in new tab)
On May 16th, we celebrate Global Accessibility Awareness Day (GAAD), an annual event dedicated to increasing awareness about accessibility issues for people with disabilities, technology experts, customers, educators, and students. At Microsoft, our unwavering commitment is to e…
Copy-on-Write performance and debugging (opens in new tab)
This is a follow-up to our previous coverage of Dev Drive and copy-on-write (CoW) linking. See our previous articles from May 24, 2023, October 13, 2023, and November 2, 2023. Dev Drive was released in Windows 11 in October, 2023, and will be part of Windows Server 2025 this fal…