Good morning and welcome to Build. You know, it's always fun to be back at Build, especially in times like this. You know, we're just about getting into these middle innings of another platform shift. And these middle innings are where all things happen, all things scale. In fact, it reminds me, for me, you know, '91 and Win32 or, you know, the Web Stack in '96, 2008 and cloud and mobile. And here we are, in 2025, building out this open agentic web, at scale. And, more importantly, you know, it's all about expanding that opportunity for developers across every layer of the stack so that you all can build the apps, the agents that can empower every person and every organization on the planet. That's what we will unpack at this conference.
You know, software engineering has always been about having the right tools to bring your ideas to life, continually perfect and craft and tame complexity. AI has become so central to how we code, and that's why we are open sourcing Copilot in VS Code. We're really excited about this. You know this is a big deal. Starting today, we will integrate these AI-powered capabilities directly into the core of VS Code, bringing them into the same open source repo that powers the world's most loved, dev tool. This is the next big step forward, which is a full Coding Agent built right into GitHub taking Copilot from being a pair programmer to a peer programmer. You can assign issues to Copilot, bug fixes, new features, code maintenance, and it will complete these tasks autonomously. And today I'm super excited that it's now available to all of you.
Now, let's go up the stack. Let's talk about the platform opportunity of Microsoft 365. I'm very excited about the latest update to Microsoft 365 Copilot, which is now generally available. It's really exciting to see this. It really brings together Chat, Search, Notebooks, Create, and Agents all into this one scaffolding that's intuitive. I always say this is the UI for AI. Today we are introducing a new class of enterprise-grade agents you can build using models fine-tuned on your company's data, workflows, and style. We call it Copilot Tuning. It's all about taking that expertise that you have as a firm, and further amplifying it so that everyone in the company gets it, and also your products and services reflect it.
As models evolve, you know, faster and become more capable, with new samples being dropped like every couple of months, the apps will have to evolve, to become these full stateful applications that are multi-model and multi-agent. Think of Foundry like a production line for intelligence. You know today, we're going further. It starts for Foundry with model choice. You know, we already support 1,900 models, whether they're response models, reasoning models, task specific, multimodal, you name it, they're all there in Foundry. That's why today we're thrilled to announce: Grok from xAI is coming to Azure. And now you can provision throughput once on Foundry, and you can across- you can use that provision throughput across multiple models including Grok. That's just a game changer in terms of how you think about models and model provisioning. And so now once you do that you now have Mistral, which you can even provision with all the sovereign deployment in the EU region, which increasingly becomes a massive consideration for people building applications around the world, because I think increasingly there will be models people will prefer in different parts. I'm very excited about Mistral, Llama, I was at LlamaCon recently with Mark, and you know, as he likes to say, he's bringing a full herd of Llama, the full Llama herd, to Azure. We're excited about all the advances that they're making in open source Black Forest Labs and many more. And we are closing the, you know, the gap and the loop between Foundry and Copilot Studio. And this is pretty, pretty key for us as developers. You can now take a model, fine tune it in - or post train it in Foundry and then drop it right into Copilot Studio so that you can now use that post-train model to automate a workflow or build an agent. So that's the type of stuff that you can do. And it goes beyond that. In the future, we believe every organization is going to have people and agents working together, and that means the systems that you are today using ubiquitously for things like identity, management of endpoints, security, will allow you to extend to agents as well. That's a big deal. You want the same rails that you use today at scale to work across people and agents. And that's what we are doing.
So far we have talked about everything we're doing in the cloud. Now, we want to bring the power of this app server and app building capability to the edge and clients as well with Foundry Local, which we are announcing today, it includes a very - It includes a fast high performance runtime, models, agents as a service, and a CLI for local app development. And yes, it's fully supported on Windows and the Mac. And today we're taking another step, to make Windows the best platform for AI. We're excited to announce the Windows AI Foundry. Windows will now include several built-in MCP servers like file system settings, app actions, as well as windowing. And we are adding native MCP registry that lets MCP-compatible clients discover these secure MCP servers that have been vetted by us for security performance, all while keeping you in control.
You know, speaking of WSL, we first announced Bash on Ubuntu on Windows nearly ten years ago. It subsequently became what we obviously call, you know, today, WSL. Looking back, in fact, the very first issue in the repo was a request to open source it. So let's go back and reopen that very first issue and close it as fixed. Because today we are making WSL fully open source.
You know, so far, we've talked a lot about the agentic web and the ecosystem around it coming together, whether it's Microsoft 365 to Foundry, all the way to Windows. And I thought it would be great to have Kevin Scott, our CTO, to give you a broader perspective on this ecosystem and our collective opportunity to build a more agentic web. Welcome, Kevin.
