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The GitHub Copilot SDK gives your application an agent runtime. BYOK lets you keep that runtime while sending model requests to your own Microsoft Foundry or Azure OpenAI deployment. Here is the complete C# setup.

Five practical examples of when durable execution makes sense, when it does not, and what it means for AI agents.

Take a tour through hundreds of performance improvements in .NET 11.

Learn how C# unions and closed hierarchies work with System.Text.Json across ASP.NET Core Minimal APIs, MVC, SignalR, Blazor, and OpenAPI.

You built an agent with Microsoft Agent Framework and it works great on your machine. Now what? Turns out deploying it to production takes 1 NuGet package, 3 lines of C#, and 2 commands. Let's do it.

Get the most out of the latest models by providing the right level of instructions

Microsoft.Testing.Platform brings failures into GitHub Actions and Azure DevOps, uses pipeline history to separate regressions from flakes, and preserves usable reports when a test host crashes.

MCP C# SDK v2.0 implements the 2026-07-28 specification with a stateless-first protocol, standardized HTTP headers, and Multi Round-Trip Requests for interactive tools, all while staying backward compatible.

Catch up on all the .NET sessions from Microsoft Build 2026 covering .NET 11, union types in C#, AI building blocks, the agentic web, .NET MAUI, and more!

Announcing a Public Preview .NET package that adds policy enforcement, startup tool scanning, fallback governance, and response sanitization to MCP servers with a single builder extension.

Microsoft Copilot Studio recently upgraded its .NET WebAssembly engine to .NET 10. The migration was straightforward, simplified deployment, and delivered another round of meaningful performance gains for end users.

Learn how to implement API versioning in your .NET 10 applications using OpenAPI for better API management and documentation.

The C# Dev Kit team replaced C++ Node.js addons with C# and Native AOT, removing a dependency on Python. This post walks through building a Node.js native addon entirely in C# using N-API, LibraryImport, and UnmanagedCallersOnly.

After ten months using GitHub Copilot Coding Agent (CCA) in dotnet/runtime, the .NET team shares data-driven lessons on cloud-AI-assisted development.

Discover what’s new in the v1.0 release of the official MCP C# SDK, including enhanced authorization, richer metadata, and powerful patterns for tool calling and long-running requests.

Vibe Coding. IntelliSense on Steroids. Intention-Based Development. Call it what makes you happy - it's "just" the next evolutionary step in software development for me. Which let me build my stranded 82-year-old retirement-resistant mom an ersatz time-study app when her dongle died at midnight.

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

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

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

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

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.

Announcing the release of .NET 10, the most productive, modern, secure, intelligent, and performant release of .NET yet. With updates across ASP.NET Core, C# 14, .NET MAUI, Aspire, and so much more.

Microsoft Agent Framework (Preview) unifies agent creation, orchestration, tooling, hosting, and observability so any .NET developer can ship production AI agents faster.

Learn how to generate images from natural language prompts using the universal abstractions in Microsoft's extensions for .NET AI.

Take a tour through hundreds of performance improvements in .NET 10.