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Azure Cosmos DB Conf 2026 Recap: Lessons from Production
A team was running at 100% RU utilization. Throttles were compounding into retries. P99 latency was degrading. The assumption was obvious: provision more throughput. They didn’t. Instead, they found a single logical partition absorbing more than 80% of traffic. After fixing the data model—without scaling the database—RU utilization dropped to 20–35%, throttling vanished, and latency normalized. That was the real-world case study Anurag Dutt shared in his Azure Cosmos DB Conf 2026 session, From Rising RU Costs to Stable Performance. One automated integration account was generating most writes. A partition...
LangChain.js for Beginners: A Free Course to Build Agentic AI Apps with JavaScript
Want to build AI agents with JavaScript that go beyond basic chat completions? Agents that reason, call tools, and pull from knowledge bases on their own? We put together a free, open source course to help you get there. LangChain.js for Beginners is 8 chapters and 70+ runnable TypeScript examples. Clone the repo, add your API key to a .env file, and start building. Why LangChain.js? If you already know Node.js, npm, TypeScript, and async/await, you don't need to switch to Python to build AI apps. LangChain.js gives you components for chat models, tools, agents, retrieval, and more so you're not wiring every...
Securing MCP: A Control Plane for Agent Tool Execution
The Model Context Protocol (MCP) is quickly becoming a common way for AI agents to discover and use tools. It provides a consistent interface to databases, APIs, file systems, and third-party services, which makes it easier to plug capabilities into agent workflows. However, MCP standardizes the execution surface without defining how that surface should be governed. Tool definitions are fed directly to the model, tool servers can be hosted by anyone, and there is no built-in point where policy is evaluated before a call is executed. To address that gap, we’ve been building a runtime governance layer for MCP...
Take your PostgreSQL-backed apps to the next level
PostgreSQL is a powerful and hugely popular database engine, and it really comes alive across Microsoft developer platforms. You can build with PostgreSQL across Azure offerings, develop productively in Visual Studio Code with strong extensions and tooling, and connect your data to agentic development workflows and AI services. There's amazing opportunity to bring those pieces together to modernize apps faster, migrate with confidence, and ship intelligent experiences on a proven database foundation. The challenge is that getting the most out of PostgreSQL across this full stack can be complex, especially when yo...
Awesome GitHub Copilot just got a website, and a learning hub, and plugins!
Back in July, we launched the Awesome GitHub Copilot Customizations repo with a simple goal: give the community a place to share custom instructions, prompts, and chat modes to customize the AI responses from GitHub Copilot. We were hoping for maybe one community contribution per week. That... did not happen. Instead, you all showed up. In a big way. The repo now has 175+ agents, 208+ skills, 176+ instructions, 48+ plugins, 7 agentic workflows, and 3 hooks - all contributed by the community. What started as a curated list has become something much bigger, and we needed to match that ...
Build a real-world example with Microsoft Agent Framework, Microsoft Foundry, MCP and Aspire
Building AI agents is getting easier. Deploying them as part of a real application, with multiple services, persistent state, and production infrastructure, is where things get complicated. Developers from the .NET community have requested whether a real-world example that shows running on local machine as well as on the cloud in a cloud-native way. We've heard you! We built an open-source Interview Coach sample to show how Microsoft Agent Framework, Microsoft Foundry, Model Context Protocol (MCP), and Aspire fit together in a production-style application. It's a working interview simulator where an AI coach w...
Get started with GitHub Copilot CLI: A free, hands-on course
Learn GitHub Copilot CLI with this free, 8-chapter hands-on course. Review code, generate tests, debug issues, and build custom agents and skills - all from your terminal. No AI experience needed. Works with GitHub Copilot Free. Clone the repo or open in Codespaces to get started.
The JavaScript AI Build-a-thon Season 2 starts today!
The JavaScript AI Build‑a‑thon Season 2 starts today! Join a free, four‑week, hands‑on program—from Local AI and RAG pipelines to multi‑agent hackathon—designed specifically for JavaScript/TypeScript developers.
GitHub Copilot Dev Days: Build faster with GitHub Copilot CLI, in VS Code & Visual Studio, and beyond!
Modern software development is moving fast—and AI is now a practical part of how Microsoft developers design, build, and ship applications every day. From writing code in Visual Studio and VS Code, to building cloud-native apps on Azure, developers are looking for ways to stay productive without sacrificing quality. That’s exactly why GitHub Copilot Dev Days exists. GitHub Copilot Dev Days is a global series of hands-on, in-person, community-led events designed to help developers learn how AI-assisted development fits naturally into the Microsoft developer stack. You’ll see how GitHub Copilot works alon...