Build 2025 keynote
Satya Nadella · May 19, 2025 · 1h 59m · Seattle
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
- 1Satya Nadella framed the event around building an open agentic web at scale.2:05
- 2GitHub Copilot now has 15 million developers using it.3:20
- 3GitHub Copilot coding agent is a full agentic partner built into GitHub.7:23
- 4Microsoft 365 Copilot Tuning lets customers train agents on their own company data.21:17
- 5Microsoft announced broad first-party support for Model Context Protocol (MCP).55:04
- 6Windows AI Foundry unifies the AI developer lifecycle for training and inference on Windows.1:02:31
- 7NLWeb was introduced as an open project giving websites a conversational, MCP-native interface.1:22:34
- 8Microsoft Discovery was unveiled as an agentic AI platform to accelerate scientific R&D.1:46:51
Announced
1 available the same day| Announcement | Status |
|---|---|
| GitHub Copilot coding agentAsynchronous agentic coding partner built into GitHub | Announced |
| Windows AI FoundryUnified platform for the AI developer lifecycle on Windows | Announced |
| Azure AI Foundry Agent ServiceOrchestrates multi-agent workflows; Semantic Kernel + AutoGen in one SDK | GA |
| Microsoft Entra Agent IDAssigns unique identities to agents to prevent agent sprawl | Preview |
| Model Context Protocol supportFirst-party MCP support across GitHub, Foundry, Copilot Studio, Windows 11 | Announced |
| NLWebOpen project giving websites a conversational, MCP-native interface | Announced |
| Microsoft DiscoveryAgentic AI platform for accelerating scientific R&D | Announced |
| Microsoft 365 Copilot TuningLow-code agent creation using a company's own data | Announced |
Related keynotes
| Date | Keynote | |||
|---|---|---|---|---|
| Jun 2, 2026 | Microsoft Build 2026Satya Nadella · 2h 23m · 8 announcedAgents, AI coding | Agents, AI coding | Build 2026 relocated from Seattle to San Francisco for the first time, running June 2-5, 2026. | 8 |
| Nov 19, 2024 | Microsoft Ignite 2024Satya Nadella · 1h 16m · 9 announcedAgents, AI infrastructure, Security | Agents, AI infrastructure, Security | Zero Day Quest, a hacking event with $4 million in rewards focused on cloud and AI security, was announced | 9 |
| May 21, 2024 | Microsoft Build 2024Satya Nadella · 53m · 8 announcedPlatforms, AI coding, Models | Platforms, AI coding, Models | The Windows Copilot Runtime makes Windows a platform for AI apps, with 40 plus on-device models available out of the box | 8 |
About this keynote
Keynote page: www.youtube.com/watch?v=ceV3RsG946s
On stage
- Satya NadellaChairman and CEO, Microsoft
Sources
Companies named: Fujitsu, GitHub, Microsoft, NTT DATA, xAI
Last changed 2026-09-24.
History (append-only)
- 2026-09-24 · address changed by seed
- 2026-09-24 · announcements changed by seed
- 2026-09-24 · takeaways changed by seed
- 2026-09-24 · themes changed by seed
- 2026-09-24 · basis changed by seed
Sources: official keynote videos, their captions and the hosts' recaps, summarized by AI; watch the source for exact wording. Logos via logo.dev; trademarks belong to their owners.