If you have sat through a Microsoft keynote more than once, you know the pattern: a wall of product names, a couple of demos that feel like magic, and then weeks of work figuring out what is actually shipping versus what is a sizzle reel. Build 2026 (San Francisco, June 2–3) was the most agent-dense keynote Microsoft has ever given — seven in-house models, a whole context layer, a brand-new category of agent, a containment story that reaches from silicon to cloud, and a concept for hardware that runs agents instead of apps.

This post is the map I wish I’d had on the morning of June 2. I’ll walk every major announcement, explain each one the way I’d explain it to a colleague (not the way the press release phrases it), and — because that’s the job most of us actually have — call out what it means for whoever has to deploy, govern and secure this stuff. It is a round-up, not a feature comparison, and I’ll flag clearly what is generally available, what is preview, and what is still just a slide.

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