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Highlights
Explore union types in C# 15
C# 15 introduces union types — declare a closed set of case types with implicit conversions and exhaustive pattern matching. Try unions in preview today and see the broader exhaustiveness roadmap.
Read moreClick to read more about this postTake full control of your floating windows in Visual Studio
Make Visual Studio floating windows work perfectly with PowerToys FancyZones. Flip one option to get independent windows, better snapping, and less friction.
Read moreClick to read more about this postMCP Apps on Azure Functions: Quickstart with TypeScript
Learn how to build and deploy MCP (Model Context Protocol) apps on Azure Functions using TypeScript. This guide covers MCP tools, resources, local development, and serverless deployment with a practical weather app example.
Read moreClick to read more about this postLatest posts
Dec 23, 2025
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When irate product support customers demand to speak to Bill Gates
So transfer them to his office, or so it seems.
The Old New Thing
Dec 23, 2025
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SharePoint Framework (SPFx) roadmap update – December 2025
SPFx is powering the future of Microsoft 365. From AI-driven portals to seamless integrations across SharePoint, Teams and Viva, SPFx is driving innovation at scale. This monthly blog series kicks off our journey into the next evolution - transparent, community-driven, and built for the AI era. Let’s shape what’s next, together.
Microsoft 365 Developer Blog
Dec 22, 2025
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How AI fixed my procrastination
I struggled to get started. For ages, I kept putting off building this website, creating a new programming language for Visual Studio, and coming up with fresh color themes. Each project looked overwhelming, and I couldn’t find the time or motivation to jump in. It all just felt like...
Visual Studio Blog
Dec 22, 2025
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All the other cool languages have try...finally. C++ says "We have try...finally at home."
The destructor serves as the "finally".
The Old New Thing
Dec 22, 2025
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The New Test Run Hub is Going Generally Available!
Delivering high-quality software requires clarity, speed, and collaboration. That’s why we introduced the New Test Run Hub in Azure Test Plans. A modern, streamlined experience designed to make test execution and analysis fast and intuitive.
And we’re excited to announce that this...
Azure DevOps Blog
Dec 19, 2025
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Azure Developer CLI (azd) Dec 2025 - Extensions Enhancements, Foundry Rebranding, and Azure Pipelines Improvements
This post announces the December release of the Azure Developer CLI (`azd`).
Azure SDK Blog
Dec 19, 2025
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Work item linking for Advanced Security alerts now available
Security vulnerabilities don't fix themselves. Someone needs to track them, prioritize them, and actually ship the fix. If you've ever tried to manage security alerts alongside your regular sprint work, though, you know the friction: you're looking at an alert in one tab, switching to...
Azure DevOps Blog
Dec 19, 2025
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A shortcut gives me a weird path for a program shortcut that doesn't point to the executable, so what is it?
It's a placeholder because the shortcut is to an MSI application.
The Old New Thing
Dec 18, 2025
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What’s new in Microsoft Foundry | October and November 2025
Azure AI Foundry is now Microsoft Foundry. Read the latest announcements about agents, models, tools and more.
Microsoft Foundry Blog