Microsoft
Developer Blogs

Microsoft Agent Framework now integrates with the Claude Agent SDK, enabling you to build AI agents powered by Claude's full agentic capabilities. This integration brings together the Agent Framework's consistent agent abstraction with Claude's powerful features, including file editing,...

The case of "Bring your own SAFEARRAY."

This post announces the January 2026 release of the Azure Developer CLI (`azd`).

Azure SDK releases every month. In this post, you'll find this month's highlights and release notes.

In Episode 111 of Azure Cosmos DB TV, host Mark Brown is joined by Yohan Lasorsa to explore how developers can build agent-powered applications using a fully serverless architecture. This episode focuses on a practical, end-to-end example that demonstrates how transactional application...

Find a way to take ownership.

Introducing Dev Proxy v2.1 with configuration hot reload and stdio proxying

The User Configuration API is now available in the beta endpoint in Microsoft Graph. Use it to create, read, update, and delete user configuration objects in Exchange Online mail folders.

Modern infrastructure work is increasingly agent driven, but only if your AI actually understands the platform you’re deploying. This guide shows how to turn GitHub Copilot CLI into an Azure Cosmos DB aware infrastructure expert by loading the Azure Cosmos DB Agent Kit. In under a...

Learn how Microsoft.Extensions.AI provides a unified API for building intelligent .NET applications with any LLM provider - one interface, endless possibilities, with built-in middleware, telemetry, structured outputs and more.

SPFx is powering the future of Microsoft 365 with AI driven portals and deep integrations across SharePoint Teams and Viva. The January 2026 update shares new features and the roadmap for the next evolution built for the AI era. This is a transparent community driven journey that we shape together.

You have to use the original pointer, but even that won't be good enough.

With the launch of Visual Studio 2026, we announced a Private Preview of GitHub Copilot app modernization for C++, which reduces the cost of adopting the latest version of the MSVC Build Tools. We used the feedback we received from our many Private Preview participants to make...

We're excited to announce the latest 1.22 release of the CMake Tools extension for Visual Studio Code. This update brings a host of new additions, including project outline updates for filtering and bookmarking CMake targets in large CMake projects and expanded CTest support to customize...

Microsoft Agent Framework now integrates with the GitHub Copilot SDK, enabling you to build AI agents powered by GitHub Copilot. This integration brings together the Agent Framework's consistent agent abstraction with GitHub Copilot's capabilities, including function calling, streaming...

Productivity Improvements This month, we are bringing you a series of small yet long requested and popular features to let you better control and customize your editor. Fast scrolling: Hold down the Alt key while scrolling the mouse wheel to move quickly when reviewing code or...

The concerns when adding a feature to an existing API.

When developers hear "cloud" and "AI," their first thought is often about cost. "How much will this cost me to learn? Can I build something meaningful without racking up a surprise bill?"   Budget Bytes is a new series is designed to inspire developers to build affordable,...

Meet the .NET team at NDC London 2026 to explore the latest in .NET 10, Azure, and AI-powered development through sessions and 1:1 meetups.

We’re launching Evals for Agent Interop, a starter evaluation kit that provides curated scenarios and representative data that emulate real digital work, and an evaluation harness that organizations can use to self-run their agents across Microsoft 365 surfaces.

Two ways of preserving the data.

VS Code now supports MCP Apps, enabling AI agents to display interactive UIs for richer developer workflows. Read the full article

In Episode 110 of Azure Cosmos DB TV, host Mark Brown is joined by Sajeetharan Sinnathurai to explore how the Azure Cosmos DB MCP Toolkit is changing the way developers build, deploy, and scale AI agents using real application data. As agentic AI systems evolve, one challenge continues...

This week we shipped the GitHub Copilot SDK which takes the agent loop from the Copilot CLI and makes it easy to embed in other applications. We’ve been using, improving, and extending Copilot CLI for the last few months and it’s sparked new ideas about what it means to have the right...

You can wrap it in an IDisposable.

Learn how to streamline AI development by using Microsoft Devtunnels to connect local services with Azure Machine Learning evaluation pipelines, eliminating deployment delays while maintaining comprehensive cloud-based validation.

The Azure Cosmos DB Agent Kit is an open-source collection of skills that teaches your AI coding assistant (GitHub Copilot, Claude Code, Gemini CLI) expert-level Azure Cosmos DB best practices. Install with one command, get production-ready guidance instantly. The Challenge Every...

It doesn't do much, but it saves typing.

Last year, we launched our new GitHub Copilot build performance capabilities in Private Preview. With help from our fantastic C++ community, we gathered insights and addressed key feedback. We’re happy to share that GitHub Copilot build performance for Windows is now in Public Preview....

Code will be generated, not written. Most enterprise AI workloads are net-new microservices. Modular, greenfield work. Perfect for coding agents. The catch? Out-of-the-box agents lack domain knowledge about your SDKs and patterns. But frontier LLMs are extraordinarily sample efficient....

You are replacing the window procedure, not the dialog procedure.

We're excited to announce that the Azure Performance Diagnostics Tool for Java is now available for preview as part of the Azure SRE Agent platform, bringing intelligent, automated Java performance diagnoses. Currently supporting Java workloads deployed to Azure Kubernetes Service (AKS)...

Today we released PIX version 2601.15, which can be downloaded here. This release includes everything in the previous 2509.25 release, plus: A new Intel plugin with many new features and improvements Many new Buffer Viewer and Buffer Formatter improvements Misc other bug fixes...

A new release of the Microsoft build of Go including security fixes is now available for download.

Dealing with emergencies.

PowerToys 0.97 is here! This release packs in a ton of improvements to Command Palette, introduces a brand-new mouse utility called CursorWrap, expands CLI support across several utilities, and includes plenty of other refinements. Get the update by checking for updates in PowerToys or...

We’re introducing a limited private preview that allows you to add additional fields as filters on backlog and Kanban boards. This long-requested feature helps teams tailor their views, focus on the work that matters most, and provide feedback as we iterate toward general availability.

An old flag from 16-bit Windows.

App developers require performance, stability, and cross-platform consistency such as fast startups, smooth UI, and seamless code sharing across Windows, Android, and iOS as these factors directly impact user experience, development efficiency, and business outcomes. High performance and...

We thought it was a good time to check in and highlight some of the work happening in Azure Repos. In this post, we’ve covered several recent improvements, along with a preview of features that are coming soon. To stay up to date, be sure to visit the Azure DevOps Roadmap. These...

The tab index number is an authoring concept, not a runtime concept.

Introduction  This post is Part 1 of the series Serverless Application Development with Azure Functions and Azure Cosmos DB, where we explore how to build end-to-end serverless applications using Azure Functions for compute and Azure Cosmos DB for storage. Together, these services...

This blog details how the Azure AI Evaluation SDK can be used to assess the performance of a small language model for function calling, such as Phi-4-mini-instruct, and view the results in Microsoft Foundry.

Today, we are excited to announce that GPT-5.2, Azure OpenAI’s newest frontier reasoning model, is available in Microsoft Azure for U.S. Government Secret and Top Secret cloud environments. This release marks another significant milestone in our mission to bring cutting edge AI...

The strings are an implementation detail.

We are excited to introduce Microsoft Entra PowerShell v1.2.0, a major update that delivers full support for Agent Identity Blueprints, expanded application configuration capabilities, and modernized invitation APIs aligned with Microsoft Graph models. This release consolidates...

Are you wasting time reviewing code for nits on code standards, project preferences, or important contribution guidelines? We know the pain. It’s all too easy for best practices and those tiny but critical team details to slip through the cracks, resulting in inconsistencies,...

Every production system has a story behind it. The scaling limit you didn’t expect. The data model that finally clicked. The tradeoff you had to make under real-world pressure. The solution that worked—and the lessons you’d pass on to the next team. Azure Cosmos DB Conf...

How we built docfind, a high-performance client-side search engine using Rust and WebAssembly, and how GitHub Copilot accelerated development. Read the full article

Earlier this year, we launched Agent Academy: Recruit, a foundational learning path designed to help makers and developers get started with building agents in Copilot Studio. The response exceeded our expectations. Since launch, thousands of learners have worked through the Recruit...

If you build agents with the Copilot Studio extension for Visual Studio Code, you already know the fastest way to iterate is to treat your agent like software: version it, review changes, and promote it through environments with confidence. Today, the Microsoft Copilot Studio extension...

This blog post documents the transformation of the azure-search-openai-demo (a Python/TypeScript RAG application) through the addition of Aspire for local development and observability. It demonstrates how Aspire can enhance polyglot applications without requiring rewrites.

Finding all the clipping parents.

A recap of the latest servicing updates for .NET and .NET Framework for January 2026.

Finding the correct clipping parent.

Scenario: When Every Millisecond Counts in Gaming Imagine millions of players logging in at the exact moment a new game season launches. Leaderboards light up, achievements tally, and in-game shops buzz with transactions. In these high-stakes moments, speed and reliability aren’t...

Build interactive Android widgets with .NET MAUI using RemoteViews, intents, and shared data.

A deep dive into the technical challenges of keeping .NET's product repositories synchronized with our Virtual Monolithic Repository using a custom two-way algorithm.

Aspire 13 brings comprehensive JavaScript and TypeScript support to cloud-native development, enabling you to orchestrate Node.js applications, Vite frontends, and JavaScript services alongside your .NET projects with unified tooling and seamless integration.

Preventing the cursor from pointing to nothing.

Looking at child objects.

Learn what is new in the Visual Studio Code December 2025 Release (1.108). Read the full article

Scaling AI agent development with Aspire and Git worktrees by solving port conflicts through automatic port allocation scripts and an MCP proxy layer that enables parallel AI agents to orchestrate and debug complete distributed systems simultaneously.

It's old and rather simple, but we like simple.

How to read this article This article is a reflection based on hands-on experience and is written for engineers and technical leaders who are facing a new application modernization effort and want to build a realistic mental model before reaching for tools. If you are new to...

The MongoDB EF Core provider now supports Queryable Encryption and Vector Search. Learn how to encrypt sensitive data while querying it and build AI-powered semantic search applications directly with EF Core.

We are very excited to announce the public preview for private endpoint support for Azure Cosmos DB Mirroring with Microsoft Fabric mirroring. This feature allows you to preserve the enhanced network security on your data in Cosmos DB from virtual networks or private endpoints, allowing...

A hands‑on walkthrough of building MCP servers that can plug AI applications into Azure Cosmos DB The Model Context Protocol (MCP) has established itself as the ubiquitous standard for connecting AI applications to external systems. Since its release, there have...

You'll have go to a larger scope.

XAML Studio Open Sourced It's been over 8 years since what became XAML Studio was started. And from nearly the beginning, it was always envisioned as an open-source project… So, it's with great pleasure that I'm happy to announce that day has finally come! XAML Studio is now an...

Supporting re‑ranking has been one of the most common requests lately. While not always essential, it can be a valuable addition to a solution when you want to improve the precision of your results. Unfortunately, there isn’t a universal, standardized API for a “re‑rank” call...

The Cloud at Hyperscale: ARM’s Mission and Growth Azure Resource Manager (ARM) is the backbone of Azure’s resource provisioning and management, orchestrating billions of daily requests from customers around the globe. ARM manages all resources for Azure: VMs, Storage, Databases,...

Could do with a little less rotating.

A practical introduction to modern AI for .NET developers.

Applying the rotation trick to our new problem.

I always enjoy the quiet stretch between Christmas and New Year’s. It’s one of the few moments in the year when things slow down just enough to reflect on what actually resonated. While many of us were unplugging, our digital team was doing the opposite, editing and publishing 19...

A different algorithm, employing a different kind of cleverness.

A variation on the constant-memory rotation.

A breakthrough year for modernization, AI‑assisted development, Agentic AI development, and platform innovation 2025 was one of the most significant years yet for Java at Microsoft. From the arrival of OpenJDK 25 as the newest Long‑Term Support (LTS) release, to AI‑powered...

Let's take a look back at the amazing .NET videos, events, and live streams from 2025!

Another year gets relegated to history.

The recurring problem of synchronous resumption.

Let's look back at the most-read .NET blog posts published in 2025, from .NET 10 to AI, performance, and developer tooling.

Choosing the color-key and other brief discussions.

You can register for a memory notification.

You have to find new ways of going faster.

The struggle for null termination.

Understanding the difference between keys and characters for accelerators.

So transfer them to his office, or so it seems.

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.

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...

The destructor serves as the "finally".

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...

This post announces the December release of the Azure Developer CLI (`azd`).

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...

It's a placeholder because the shortcut is to an MSI application.

Azure AI Foundry is now Microsoft Foundry. Read the latest announcements about agents, models, tools and more.

1. Introduction AI coding agents/assistants such as GitHub Copilot have become common in modern software engineering workflows. Their strengths—rapid pattern completion, context-aware suggestions, and the ability to learn style from local code—stem from broad training on large...

Stick to Unicode and you'll be fine.

Introduction to a scaleable and secure turnkey architecture for deploying Copilots connected to Azure AI Search.

Connecting the Dots: How Graph Databases Drive Innovation In today’s data-rich world, organizations face challenges that go beyond simple tables and rows. Whether it’s uncovering hidden relationships in social networks, detecting fraud, or powering recommendation engines, graph...

DirectX12 shipped in 2015 with a simple goal: give developers more control so games run faster, look better, and scale across Windows PC and console. Over the last decade, DirectX 12 delivered on that promise. We added features and made it easier for developers to focus on gameplay &...

Aspire 13.1 is here with CLI-based MCP for AI agents, dashboard improvements, Azure updates, and TLS termination support.

Working out the implications.

Email is a key part of how people get things done, whether it’s booking a reservation, confirming a package delivery, or managing a cab reservation. But as inboxes become increasingly cluttered, important transactional information often gets buried. Users are forced to open multiple...

In November, we introduced C++ code editing tools for GitHub Copilot as a Private Preview, focusing on partnering with customers to tackle one of the common, taxing challenges for C++ development: refactoring at scale. Since then, we've listened to feedback and refined our tooling to make...

In our previous blog we introduced Azure Command Launcher for Java (jaz) —a safe, resource-aware way to launch the JVM without hand-tuning dozens of flags. This follow-up shares performance results, focusing on how jaz affects G1 behavior, heap dynamics, and pause characteristics under...

Azure DevOps enhanced support for Microsoft.Testing.Platform, from running tests to publishing results!

It starts the way these things always start.  A red build. A failing test. And that quiet, sinking feeling of “This worked yesterday.”  Meet Sam. Sam’s not a junior, not a rockstar, just a solid developer who’s shipped enough code to know that bugs don’t care how...

Something is forcing it down an alternate path.

A few months ago we introduced the Azure Boards integration with GitHub Copilot in private preview. The goal was simple: allow teams to take a work item from Azure Boards and send it directly to GitHub Copilot so the coding agent could begin working on it, track progress, and generate a...

With introduction of MCP support, it’s now much easier for developers to integrate their business workflows, SaaS, and LoB systems into Copilot via declarative agent.  

Build professional iOS widgets with .NET MAUI, from static displays to interactive widgets.

Here on the Visual Studio team, our top priority is making your coding experience smoother and more enjoyable. And that begins with truly listening to your feedback. We understand that sometimes sharing your thoughts can feel like tossing bug reports and suggestions into a black hole. It...

When the journey is not half of the fun.

Who goes first?

In the new year, we’ll be retiring the Global Personal Access Token (PAT) type in Azure DevOps. Global PATs allow users to authenticate across all accessible organizations. While this can feel convenient, a single credential with broad reach creates a concentrated security risk —...

As someone who lives and breathes in the command line, I love making my terminal feel like home. Windows Terminal is full of personalization options that really allow for a custom experience. Additionally, I can stay within my terminal for my development with GitHub Copilot with the...

Aspire provides a *batteries included* approach through **integrations**

If they don't match, then the 8-bit strings are basically broken already.

The Azure Cosmos DB Linux-based vNext emulator (preview) is a local version of the Azure Cosmos DB service that runs as a Docker container on Linux, macOS, and Windows. It provides a cost-effective way to develop and test applications locally without requiring an Azure subscription or...

For years, “Database” and “Search systems" (think Elastic Search) lived in separate worlds. While both Databases and Search Systems operate in the same domain (storing, indexing and querying data), they prioritized different aspects. OLTP Databases prioritized Structured and...

What's new in the Visual Studio Code November 2025 Release (1.107). Read the full article

We are excited to announce general availability for the SharePoint Framework 1.22. This time focus is primarily on updating the build toolchain and to address npm audit issues.

You’re a .NET developer with a busy morning, and an Azure DevOps ticket drops: “Login endpoint 500s under load.” You’ve got to fix it, review a teammate’s feature branch, and keep your repo clean - all before lunch. Visual Studio’s Git tools turn this everyday Git workflow of...

Getting it from a place that might have been obvious in the past, but maybe not today.

A robust agent onboarding process is the backbone of scalable, reliable multi-agent AI systems—enforcing uniqueness, rigorous evaluation, and responsible AI practices at every step.

We’re thrilled to announce that Azure DevOps Server is now generally available (GA)! This release marks the transition from the Release Candidate (RC) phase to full production readiness, delivering enterprise-grade DevOps capabilities for organizations that prefer self-hosted...

A recap of the latest servicing updates for .NET and .NET Framework for December 2025.

Learn how to implement blue-green deployment in Azure Container Apps using Azure Developer CLI (azd) revision-based deployment strategy.

Learn how to implement in-app purchases in your .NET MAUI apps with our new cross-platform billing sample for Android, iOS, Mac Catalyst, and Windows.

Keeping JavaScript/TypeScript projects up-to-date can be a challenge, especially when it’s time to upgrade a bunch of npm packages or adopt the latest frameworks. We’ve heard from many JS/TS developers that modernizing an older app (upgrading dependencies, fixing breaking changes,...

Let's ask the locale.

We’re thrilled to introduce Microsoft Entra PowerShell v1.1.0 available on PowerShell Gallery. The headline feature is No more version pinning to Microsoft Graph PowerShell v2.25.0. You can now use the latest Graph modules without restrictions, giving you unmatched flexibility and...

We’ve heard you and we’ve made it happen! One of the most requested changes from our community has been greater flexibility when working with Microsoft Graph PowerShell. Previously, Entra PowerShell pinned its dependency to Microsoft Graph PowerShell v2.25, which limited...

Azure Backup for Azure Cosmos DB is a new option that lets you securely protect and recover your Azure Cosmos DB data for compliance, audit, and ransomware protection scenarios. It leverages Azure Backup’s vault isolation and Azure Cosmos DB’s native backup streams to deliver...

Explore how the Learn MCP server enhances the developer experience with Copilot, showcase practical examples, and provide straightforward integration instructions for Visual Studio, Visual Studio Code, the Copilot Command Line Interface, and the Copilot Coding Agent

Introducing new networking features in .NET 10 including HTTP space, WebSockets, security and more!

Building AI agents with the Model Context Protocol (MCP) is powerful, but when it comes to hosting your MCP server in production, you need a solution that's reliable, scalable, and cost-effective. What if you could deploy your regular Node.js MCP server to a serverless platform that...

Aspire 13 introduces first-class Python support with dedicated APIs for hosting Python applications, modules, and ASGI web apps alongside your .NET services.

Starting with the easy case, or at least it looks easy.

Build enterprise-grade RAG agents with Foundry IQ Knowledge Bases in ~20 lines of Python. Learn how the Azure AI Search Context Provider brings intelligent, multi-hop retrieval to the Microsoft Agent Framework—no fragmented pipelines, just plug in the knowledge your agent needs.

2025 was a year of incredible progress for AI and our industry as a whole. At Microsoft and GitHub, we've innovated beyond isolated chats and prompts to building systems that collaborate with connected workflows and operational intelligence. This shift can be seen across the stack,...

You'll have to trick yourself before anybody notices, which may not be possible.

Ever since MCP launched, every customer has asked the same thing: “How does a private MCP registry actually work, and how do we configure it for our enterprise?”. So today, on a snowy, freezing Friday in Zurich, I grabbed a coffe, opened the GitHub docs, dove into Azure API...

.NET Conf 2025 is over, but you can catch up with all the announcements and fun with video recordings, slides, demos, and more.

As artificial intelligence continues to reshape industries and redefine the boundaries of innovation, Microsoft is proud to announce a leap forward in secure, high-performance computing in our Secret and Top Secret clouds: the integration of NVIDIA H200 Tensor Core GPUs into Azure’s AI...

You can't. You'll have to do it before the process starts.

There are many scenarios where Copilot Chat can feel limited by the built-in model training data. Maybe you want guidance on the latest web framework, documentation, or project-specific resources—but Copilot’s responses just aren’t specific enough. For developers who...

Introducing Dev Proxy v2.0 with improved AI telemetry, and small breaking changes.

MCP (Model Context Protocol) is a standard protocol that enables AI agents to securely connect with apps, data, and systems, supporting easy interoperability and seamless platform expansion. At Ignite, Microsoft Foundry introduced Foundry Tools, which serves as a central hub for...

Announcing the preview of open, modular data ingestion building blocks in .NET, empowering developers to build scalable AI pipelines with seamless integration, extensibility, and easy getting started experiences across the .NET ecosystem.

Visual Studio 2026 is here! If you haven’t heard the news yet, we’re excited to share with you that Visual Studio 2026 is now generally available! This new version can better assist you with several performance improvements, a redesigned user experience, and a major leap in...

A straight look at what’s behind the keys We’ve all tried unlearning a keyboard shortcut - it feels like forgetting how to breathe. Muscle memory doesn’t mess around. We wrestle with this every time someone suggest a “quick” shortcut change. It’s not just editing a keybinding...

Request the directory security attributes that correspond to your proposed operation.

A deep dive into the evolution of Aspire Pipelines from basic callbacks in version 9.4 to the sophisticated pipeline execution model in Aspire 13, covering deployment orchestration, concurrency, and state management.

The VS Code Insiders Podcast is your insider's guide to the features, decisions, and people shaping the future of Visual Studio Code. Read the full article

A new release of the Microsoft build of Go including security fixes is now available for download.

Join us for AI Dev Days, a two-day virtual event exploring the latest Microsoft Azure, Foundry and GitHub innovations. Whether you’re modernizing legacy apps, building with agents, or exploring the newest AI models, this is your moment to skill up, ship faster, and connect with experts.

Discover how treating AI agents as collaborators, not automation, transforms engineering workflows and accelerates complex projects

We’re excited to share all DirectX Graphics Samples have been updated to use the latest DirectX 12 Agility SDK. What’s New: Agility SDK Integration: All samples now leverage the latest Agility SDK for improved compatibility and faster adoption of new DirectX capabilities. ...

Mobile security goes beyond verifying user identity. If an attacker steals a valid token, how will your backend distinguish a legitimate request from one reproduced in an emulator or cloned environment? This is a gap in traditional authentication flows when applied to the mobile...

Earlier this year, the TypeScript team announced that we've been porting the compiler and language service to native code to take advantage of better raw performance, memory usage, and parallelism. This effort (codenamed "Project Corsa", and soon "TypeScript 7.0") has been a significant...

With Azure DocumentDB, Tata Neu delivers seamless authentication for millions of users, accelerates credit card onboarding across partners, unifies loyalty programs for hundreds of millions of members, and powers AI-driven support experiences across more than 60 brands. This...

In Visual Studio 2026 we introduced Copilot Profiler Agent, a new AI-powered assistant that helps you analyze and optimize performance bottlenecks in your code. By combining the power of GitHub Copilot with Visual Studio's performance profiler, you can now ask natural language questions...

The large obstacles.

This guide covers setting up Claude Code CLI and VS Code extension with Microsoft Foundry, configuring CLAUDE.md for project context, integrating Spec Kit for structured development, and running Claude Code in GitHub Actions. Prerequisites Azure subscription with Foundry access ...

Background  The  Property parameter introduced in Version 0.10.0-preview allowed customers to select specific properties they would want to return in the response and is used in these 2 main scenarios:   To request extra properties that are not returned by...

Data API builder (DAB) provides REST and GraphQL endpoints over SQL Server, Azure Cosmos DB, PostgreSQL, MySQL, and SQL Data Warehouse. The request-body-strict configuration value controls how REST endpoints treat unknown JSON properties in the payload: When set to true...

December 10, 2025 8 am - 10 am Pacific Registration: https://aka.ms/OSSAISummitRegistration Overview AI development is moving at a pace that leaves most teams reacting instead of leading. The next generation of applications will be built by people who understand how to design...

In the explosive era of Agentic AI, we're not just seeking more powerful models—we're searching for a development experience that lets developers actually get some sleep. When building Agents locally, we've traditionally faced three major challenges: Black-Box Execution: What is...

Visual Studio 2026 introduces new GitHub Copilot capabilities to support C++ developers in three development tasks:  Performing large-scale C++ refactors  Improving C++ build performance   Upgrading Microsoft C++ (MSVC) Build Tools  These experiences are...

Remembering some old APIs.

This blog post shares real-world experiences from Microsoft's ISE team using GitHub Copilot to accelerate AI development workflows, demonstrating how AI tools can significantly speed up tasks like creating documentation, class diagrams, data visualizations, and demo scripts when used by experienced developers.

You can ask for its handle and mark it read-only.

We're thrilled to announce the release of ASP.NET Core OData 10.0.0 Preview 1, a major modernization update that embraces .NET's native System.DateOnly and System.TimeOnly types! This release upgrades to .NET 10.0 and replaces OData's proprietary Edm.Date and Edm.TimeOfDay CLR wrapper...

Key Observability Trends Around GitHub Security Modern enterprises are increasingly adopting DevSecOps practices, integrating security into every phase of the development lifecycle. Key observability trends include: Unified Security Dashboards: Organizations seek a single...

If you want to host UI, use a real window (possibly hidden).

Join us live on December 9 to explore the newest, most practical ways to modernize your .NET apps with Azure, AI, and powerful agentic tooling.

The translation team sets the deadline.

We're excited to announce that OData Model Builder 3.0.0 Preview 1 has been officially released and is available on NuGet: Microsoft.OData.ModelBuilder 3.0.0 Preview 1 This is a major release that brings the library up to date with the latest .NET and OData ecosystem, featuring...

Azure SDK releases every month. In this post, you'll find this month's highlights and release notes.

Managing containers can be one of the most repetitive parts of modern development. Between remembering CLI commands, switching contexts, and digging through logs, it’s easy to lose focus on the actual code you’re building. The latest release of the VS Code Container Tools extension...

Celebrates Aspire 13.0 community contributions, highlighting key PRs that improved App Service, Kusto workflows, dashboards, and cross-language support.

Give your agents the power to remember  Imagine your agent never asks the same question twice. Until now, most agents have been stateless. Each conversation resets to zero, forgetting what users said just minutes ago or weeks ago. Developers tried to bridge this gap with homegrown...

Introduction Translation isn’t just converting words—it’s enabling global communication. Yet for businesses operating worldwide, achieving accuracy, speed, and domain-specific terminology has been a persistent challenge. Market trends show that 70% of consumers prefer content in...

Across industries, organizations are moving from experimenting with single agents to running AI at the center of their business operations. While single agents excel at focused tasks, customers quickly discover that real enterprise work stretches across multiple steps, involves different...

At Microsoft Ignite this year, we’re excited to announce that Azure Content Understanding in Foundry Tools is now generally available (GA). Over the past months, we’ve seen preview usage across industries, from large consultancies to healthcare leaders, with invaluable customer...

Accelerate your trustworthy AI journey with the enhanced AI Red Teaming Agent in Microsoft Foundry. Empower developers to automate adversarial testing for both models and agentic systems—covering risks like prompt injection, prohibited actions, sensitive data leakage, and task adherence. Integrate red teaming into your CI/CD pipelines using the Foundry SDK and no-code UI wizard, enabling continuous safety evaluation and rapid prototyping. With PyRIT’s open-source attack strategies and customizable risk definitions, you can systematically probe vulnerabilities, benchmark improvements, and ensure robust safeguards as agentic solutions move into production. Start today by exploring the docs, trying out sample workflows, and embedding red teaming into your development lifecycle.

We’re excited to announce that TypeSpec for Microsoft 365 Copilot is now generally available! This milestone marks the first stable release of the domain-specific language (DSL) designed to streamline how developers build and extend Microsoft 365 Copilot. Whether you’re creating...

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.

Challenge accepted.

Starting with Visual Studio 2026, we are introducing a new support lifecycle for the Microsoft C++ (MSVC) Build Tools. We are also updating the MSVC release cadence. As Visual Studio moves to a Modern Lifecycle with monthly feature updates and an annual new version, decoupling the...

Overview Working with table data is an essential part of database development — whether you’re validating behavior, debugging issues, or quickly seeding data. But switching between tools or writing repetitive T-SQL statements can slow down your workflow. We are excited to announce...

Visual Studio will adopt the Modern Support Lifecycle as a continuously updated IDE designed to deliver innovation as soon as it is ready, while maintaining the reliability and stability you count on every day with control over your build tools choices.

You've far exceeded the design goals and have even exceeded the expressive ability of a float.

The SharePoint team is excited to (finally) bring Site Collection creation to Graph! Starting in Microsoft Graph beta you can now create new site collections!

We’re happy to announce that OData .NET (ODL) 9 Preview 3 has been officially released and is available on NuGet: Microsoft.OData.Core 9.0.0 Preview 3 Microsoft.OData.Edm 9.0.0 Preview 3 Microsoft.Spatial 9.0.0 Preview 3 Microsoft.OData.Client 9.0.0 Preview 3 What’s...

Ignite 2025 brought many innovations for developers building agents for Microsoft 365. From new capabilities in Declarative Agents and Custom Engine Agents to the introduction of Microsoft Agent 365, the platform now enables organizations to architect intelligent solutions that are...

I don't see it.

Developers can now move from idea to Azure-ready code in minutes with VS Code for the Web – Azure. This browser-based environment removes setup time, reduces friction, and gives you immediate access to pre-configured runtimes, GitHub tools, and Azure integrations. As a result, you can...

Azure DevOps or GitHub Enterprise ? Today, in the Microsoft ecosystem, two Software Development Lifecycle management platforms coexist: - Azure DevOps is designed from the ground up for enterprise with advanced planning features through Azure Boards, build and release automation with...

An exploration of how .NET evolved from a distributed build system to Unified Build, dramatically reducing complexity and build times while improving flexibility and predictability for shipping .NET releases.

At Build 2025, we introduced the Microsoft 365 Copilot APIs to help developers bring grounded AI into their solutions without rebuilding indexes or compromising security. The response has been encouraging, and your feedback continues to guide the direction of the...

Introduction As cloud-native architectures scale across thousands of containers and virtual machines, Java performance tuning has become more distributed, complex, and error-prone than ever. As highlighted in our public preview announcement, traditional JVM optimization relied on expert,...

Today we are announcing the Public Preview of the Azure Command Launcher for Java, a new tool that helps developers, SREs, and infrastructure teams standardize and automate JVM configuration on Azure. The goal is to simplify tuning practices and reduce resource waste across Java...

Today, we’re introducing a powerful new way to bring AI directly to your mobile apps: Foundry Local on Android. Starting now, you can build Android applications that run AI on-device—no cloud round trips required. Sign up for the gated preview here:...

Today marks a big step forward with the public preview of Dynamic Data Masking (DDM) for Azure Cosmos DB. This feature helps organizations protect sensitive data without requiring changes to application logic or database interactions. What is Dynamic Data Masking? Dynamic Data Masking...

We’re excited to announce the Azure Cosmos DB SRE Agent built on Azure SRE Agent; a new capability designed to simplify troubleshooting and improve reliability for your applications running on Azure Cosmos DB. Some key features of Azure Cosmos DB SRE Agent are:  Sub-Agent...

Account Key Usage Metadata is a new security and observability feature that helps Azure Cosmos DB customers avoid service disruptions during key rotations. It provides visibility when each account key was last used, allowing teams to make informed decisions before rotating or migrating to...

Have you ever faced a situation where two different workloads share the same container, and one ends up slowing down the other? This is a common challenge for many of our customers running applications on Azure Cosmos DB. Imagine these scenarios: A background job consumes most of...

We are excited to announce the preview of Online Copy Jobs, a powerful new feature designed to make data migration between containers seamless and efficient with minimal downtime. With this feature, you can replicate data from a source to a destination container in real time without...

TL;DR Learn the best practices to evaluate and optimize the RAG quality of your agent using evaluations in Foundry Observability. This tutorial demonstrates these 2 best practices before deploying your RAG agent: 1. Evaluate and optimize end to end your RAG agent using reference-free...

How to get started with Azure OpenAI's next-generation GPT-4o audio models for transcription and text-to-speech applications.

In today’s rapidly evolving AI landscape, developers are seeking reliable, secure, and predictable language capabilities to power the next generation of enterprise-grade agents. As agentic architecture becomes central to modern applications, teams need tools that deliver stronger...

The access violation exceptions will continue until commit improves.

Learn how we migrated all Aspire docs from Learn to the new website aspire.dev learn

Read about new and exciting features now available in the Office Add-ins ecosystem for Ignite 2025. Learn about platform updates, developer experience improvements, and store enhancements.

Boost your testing workflow with GitHub Copilot testing for .NET, available now in Visual Studio. Automatically generate, build, and run high-quality unit tests for files, projects, or entire solutions.

This post shares how to work with the new Azure Developer CLI (`azd`) agents extension.

Agent 365 Interoperability equips any agent with apps and data to simplify human-agent workflows.

This post announces the November release of the Azure Developer CLI (`azd`).

Shared memory is the copy-free solution.

Microsoft Ignite 2025 kicked off with a wave of announcements for Azure Cosmos DB and Azure DocumentDB, setting the tone for a week of innovation in cloud databases and AI. Here’s your one-stop summary of everything unveiled—and what to watch for in the sessions ahead. Major...

We are back with a fresh PowerToys release! This month brings a redesigned Advanced Paste experience with support for multiple AI model endpoints, a wave of improvements to Command Palette, and plenty of smaller upgrades across the utility suite. Grab the update by checking for updates...

At the start of this year, we released a new set of T-SQL AI features for embedding your relational data for AI applications. Today, we have brought those features to Azure SQL and SQL database in Microsoft Fabric. This post will help you get started using the new AI functions of Azure...

Learn how Visual Studio 2026 and GitHub Copilot app modernization upgrade .NET versions and frameworks, fix build issues, and migrate apps to Azure with less manual effort

In May, we talked about the evolution of GitHub Copilot from a coding assistant into an AI powered peer programmer. Since then, GitHub has taken a major step forward - becoming an open platform for agentic development, where Agent HQ enables developers to orchestrate any agent, anytime,...

Discover the new and improved Teams SDK, designed to help developers create even more powerful agents for Microsoft Teams.

In the past, moving to the next major version of Visual Studio could take hours, sometimes days, to recreate your dev environment the way you like it. Visual Studio 2026 makes it easier than ever to stay current with the latest productivity features, performance improvements, and security...

Agent 365 serves as the control plane for agents, providing organizations with a centralized location to manage agent identity, policies, observability, and lifecycle. 

The MSSQL Extension for VS Code continues to evolve, delivering features that make SQL development more integrated, more consistent, and more developer-friendly. In version v1.37.0, we’re announcing the Public Preview of Edit Data, Data-tier Application (DACPAC/BACPAC) export &...

GitHub Copilot is taking a major step forward with expanded, deeply integrated support for JetBrains and Eclipse — bringing a new generation of agentic, intelligent capabilities directly into your favorite Java IDEs. This release strengthens Copilot’s cross-IDE experience, unifies...

We are happy to share that DiskANN vector indexing is now in public preview across Azure SQL Database, Azure SQL Managed Instance, and SQL database in Microsoft Fabric. DiskANN is a cutting-edge algorithm for efficient vector similarity search, making it ideal for powering recommendation...

We’re excited to announce the public preview of Index Advisor for Azure DocumentDB (with MongoDB Compatibility). It is a built-in AI powered performance tuning assistant that helps you understand slow queries, diagnose inefficiencies, and automatically generate optimized index...

We’re thrilled to announce the general availability (GA) of the Azure Cosmos DB extension for Visual Studio Code! This powerful extension brings enterprise-grade database management directly into your development environment, making it easier than ever to build, test, and deploy...

We’re excited to announce two updates to Azure Cosmos DB fleets: Fleet pools – now generally available Fleet analytics – now in public preview Azure Cosmos DB fleets enables developers to build scalable, isolated, and cost-effective multi-tenant or Software as a Service...

We’re excited to announce the Public Preview of a significant enhancement to the Azure DocumentDB (with MongoDB compatibility) Migration extension for Visual Studio Code—introducing online migration capability! This update makes it easier than ever to migrate MongoDB workloads to...

  Azure DocumentDB, a fully managed MongoDB-compatible database service based on the open-source DocumentDB governed by the Linux Foundation, is now generally available. It was formerly known as vCore-based Azure Cosmos DB for MongoDB. Azure DocumentDB gives developers a...

We’re excited to announce that Cosmos DB in Microsoft Fabric and Cosmos DB Mirroring are now Generally Available, uniting your operational and analytical data in one platform. You can now analyze live Cosmos DB data directly in Fabric—no complex or costly ETL required....

We're excited to announce the Azure Cosmos DB MCP Toolkit in public preview. This open-source implementation of the Model Context Protocol (MCP) gives AI agents and LLMs direct, secure access to Azure Cosmos DB. The toolkit bridges intelligent applications and globally distributed...

SQL Server 2025 marks a major milestone in database innovation by introducing native support for VECTOR data types and vector functions. These are now fully available in the freshly released SQL Server 2025 RTM. This means you can store and process high-dimensional embeddings directly...

We’re excited to announce the General Availability (GA) of native Regex support in SQL Server 2025 and Azure SQL — a long-awaited capability that brings powerful pattern matching directly into T-SQL. This release marks a significant milestone in modernizing string operations and...

We’re excited to introduce new capabilities and performance improvements for vector and full-text search in Azure Cosmos DB. These updates make it easier for developers and architects to build semantic search experiences and generative AI applications on the world’s most scalable...

After a successful public preview, we’re excited to announce the General Availability (GA) of online migration from RU-based Azure Cosmos DB for MongoDB to Azure DocumentDB (with MongoDB compatibility). This capability makes migration fast, simple, and cost-free—all through the Azure...

What we've added for PQC, and how we got there.

Harkening back to a very old mail program.

This article is authored by Gurvinder Singh, Principal Cloud Engineer at The Kraft Heinz Company. ICYMI: Hear how Kraft Heinz built an AI-powered data lineage solution leveraging Azure DocumentDB hybrid search and graph querying capabilities - watch the Ignite session here: Move...

GitHub Copilot is evolving again—this time with deep, native integration for Xcode. We’re introducing a new generation of agent-driven capabilities designed to streamline workflows, accelerate development, and keep you focused on building great apps for Apple platforms. This update...

Private Marketplace for VS Code extensions now generally available. Read the full article

We are pleased to announce AddressSanitizer (ASan) support for the Microsoft C++ (MSVC) Build Tools for ARM64 targets. ASan is a runtime memory error detector that identifies difficult-to-find bugs with zero false positives and improves memory safety. More technical information on...

How Windows 365 extends Aspire to streamline multi-repo microservice development using microservice resources, emulators, automated seed data, and cloud-based end-to-end validation.

Learn what features are in C# 14, which ships as part of .NET 10.

Learn about new F# 10 language features, performance upgrades, and tooling improvements shipping with .NET 10.

Doing it on hard mode.

This guide shares a series of videos that walk you through setting up GitHub and GitHub Copilot end-to-end for your company. These are especially useful for organizations starting from scratch who want to leverage GitHub Copilot and are looking to get started. These videos were recorded...

They can send it back with their own WM_COPY­DATA message, or they can put it in an agreed-upon shared location.

Managing cloud resources often means juggling multiple tools, writing custom scripts, and switching contexts between your IDE and cloud management portals. These extra steps slow development and make it harder to build intelligent, secure applications efficiently. We’re excited to...

A celebratory announcement of what is new in OpenAPI.NET v2 and v3.

The November 2025 release brings new Pylance features including improvements to Copilot Hover Summaries and a Code Action to convert wildcard imports to explicit imports. Keep on reading to learn more!

Visual Studio 2026 introduces a refreshed user experience, thoughtfully crafted for clarity, accessibility, and a clean interface that feels right at home on Windows. This update is the result of extensive collaboration with developers and incorporates valuable feedback from the...

Not directly, but maybe indirectly.

Using AI‑generated tools like Stagehand with Microsoft's Playwright helps ensure a smooth user experience during modernization efforts such as Hyper Velocity Engineering and monolith-to-microservices migrations.

Refactoring a C++ codebase can often require tracking updates across various sections of multiple files to ensure accuracy and relevancy.  Historically, developers have relied on manual searches across a codebase and refactoring tools to perform these types of edits. However, with...

Long build times are one of the top pain points for C++ projects. If you’ve ever waited too long for a C++ build to finish, you know how much it can slow down your productivity. In past years, we introduced C++ Build Insights to help you analyze traces and find bottlenecks. However, we...

A few problems have reared their heads at every company where I’ve worked on C++ as a Software Engineer over the past 20 years. For the most part, those problems have nothing to do with the language and how it is used, but instead all the “other” stuff, like dealing with long...