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Microsoft Build 2025: Satya Nadella Opening Keynote

Satya Nadella · May 19, 2025 · 1h 59m · Seattle

Watch on YouTubeOfficial recap

Summary

Microsoft used Build 2025 to lay out an open agentic web, pairing GitHub Copilot's new coding agent with GA of Azure AI Foundry Agent Service and broad MCP support.

Key themes: Agents, AI coding, Open source · AI-written summary from the published transcript

Where each highlight is said1:58:50
12345678
  1. 2:05

    Satya Nadella framed the event around building an open agentic web at scale.

  2. 3:20

    GitHub Copilot now has 15 million developers using it.

  3. 7:23

    GitHub Copilot coding agent is a full agentic partner built into GitHub.

  4. 21:17

    Microsoft 365 Copilot Tuning lets customers train agents on their own company data.

  5. 55:04

    Microsoft announced broad first-party support for Model Context Protocol (MCP).

  6. 1:02:31

    Windows AI Foundry unifies the AI developer lifecycle for training and inference on Windows.

  7. 1:22:34

    NLWeb was introduced as an open project giving websites a conversational, MCP-native interface.

  8. 1:46:51

    Microsoft Discovery was unveiled as an agentic AI platform to accelerate scientific R&D.

Announced

1 available the same day
AnnouncedGitHub Copilot coding agentAsynchronous agentic coding partner built into GitHub
AnnouncedWindows AI FoundryUnified platform for the AI developer lifecycle on Windows
GAAzure AI Foundry Agent ServiceOrchestrates multi-agent workflows; Semantic Kernel + AutoGen in one SDK
PreviewMicrosoft Entra Agent IDAssigns unique identities to agents to prevent agent sprawl
AnnouncedModel Context Protocol supportFirst-party MCP support across GitHub, Foundry, Copilot Studio, Windows 11
AnnouncedNLWebOpen project giving websites a conversational, MCP-native interface
AnnouncedMicrosoft DiscoveryAgentic AI platform for accelerating scientific R&D
AnnouncedMicrosoft 365 Copilot TuningLow-code agent creation using a company's own data

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About this keynote

Keynote page: www.youtube.com/watch?v=ceV3RsG946s

On stage

Companies named: Fujitsu, GitHub, Microsoft, NTT DATA, SpaceXAI

Last changed 2026-09-24.