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Put your AI to the Test with Microsoft.Extensions.AI.Evaluation
AI is changing how we build software, but it also introduces new challenges: how do you know if your AI application is giving the right answers and producing the right outcomes? Evaluations (often referred to simply as ‘evals’) provide a structured way to measure quality so you can trust your results. In this blog, we’ll introduce the concept of AI evals, show how the Microsoft.Extensions.AI.Evaluation libraries support .NET intelligent app development in Visual Studio, and walk through a simple example of how to use them in your project. Why Evaluate? As developers, we rely on tests to validate our code bef...
Complete Beginner’s Guide to Vibe Coding an App in 5 Minutes
How I built a full-featured podcast analytics dashboard with GitHub Copilot without writing a single line of code myself.
TypeScript 7 native preview in Visual Studio 2026
In March of this year Anders Hejlsberg announced TypeScript 7 native preview and in May Daniel posted Announcing TypeScript Native Previews. Visual Studio 2026 Insiders now supports TypeScript’s Native Preview. Use the download link below to install the latest preview of Visual Studio to try this out. When using this new preview, your compile times should be significantly faster, the IDE will use less memory, and you should see improved performance all around. This is especially true if you work with large TypeScript projects. What is TypeScript 7 native preview? TypeScript 7 native preview is a new version...
Visual Studio 2026 Insiders: Using Podman for Container Development
Podman is an open-source container engine that has rapidly gained popularity for its daemonless architecture, rootless operation, and compatibility with Docker CLI commands. Unlike Docker, Podman does not require a central daemon, offering improved security and flexibility - especially in enterprise and cloud-native environments. Its ability to run containers without elevated privileges makes it an attractive choice for developers focused on security and compliance. Podman Integration The integration of Podman in Visual Studio 2026 Insiders is a game-changer for developers who prefer or require Podman for their...
Diving Into Spec-Driven Development With GitHub Spec Kit
Developers are increasingly relying on AI agents to both build new software as well as extend capabilities of existing projects that they support. One challenge with AI-based systems, however, is that to produce the right output you need to first establish really good context. If you don't decide what you're building and why you're building it ahead of time, the codebase becomes the de-facto specification - a collection of seemingly disjoint components that can work together but are hard to maintain, evolve, and debug. Code is really not the best medium for requirements negotiation - nobody wants to write the ...
Announcing Awesome Copilot MCP Server
Discover and save the best GitHub Copilot chat modes, instructions, and prompts right from Copilot Chat using the new Awesome Copilot MCP Server—install with Docker, search, preview, and commit in one flow.
Designing Multi-Agent Intelligence
Written by: Maggie Liu, Thiago Rotta, Vinicius Souza, James Tooles, & Microsoft AI Co-Innovation Labs 1. Introduction Generative AI is moving from proof‑of‑concept pilots to mission‑critical workloads at a velocity rarely seen in enterprise technology. The first wave of projects typically stood up a single “do‑everything” agent, a large language model wrapped with prompt‑engineering, a vector store, and a handful of API connectors. That pattern is excellent for narrow FAQ bots, yet it collapses under the weight of real‑world enterprise constraints: Enterprises adopting the latest advancemen...
GPT-5 for Microsoft Developers
OpenAI announced GPT-5 last week in "GPT-5 and the new era of work". Working with OpenAI, we rolled out GPT-5 support the day it launched, making sure you can use and build with it and integrate it into your applications immediately. We've got you covered with a dev-focused rundown: GPT-5 availability, new capabilities, and quick-start steps. And don't miss our GPT-5 for Devs live stream Aug 21 at 10 AM Pacific, where we'll go deeper with code samples, demos, and live Q&A! GPT-5 announcement recap Top highlights from the announcement: Where you can use GPT-5 today...
The Complete Playwright End-to-End Story, Tools, AI, and Real-World Workflows
1. Introduction End-to-end testing has evolved dramatically, and Playwright stands at the forefront. Playwright offers a full ecosystem empowering developers to write, debug, and maintain tests with speed and reliability. From its powerful test runner to rich developer tools like the VS Code extension, Codegen, UI Mode, and Trace Viewer, Playwright covers every phase of your testing journey. With the recent integration of Playwright MCP and the Playwright MCP server included in GitHub Copilot's Coding Agent, AI-assisted development is now a reality, supercharging productivity and enabling smarter workflow...