.NET Aspire 1.0 GA at Microsoft Build 2024 — and why this blog runs on it

21–23 May 2024, Seattle (hybrid). The Build where Microsoft made cloud-native .NET feel ordinary, gave Windows a class of NPU-equipped Copilot+ PCs, and put a 4.2-billion-parameter multimodal model on a phone.

What we took away

• .NET Aspire 1.0 GA. Opinionated tools, templates, and NuGet packages for building observable, distributed, production-ready cloud-native .NET apps. Announced 21 May 2024. If you look at the src/ThreeBIT.AppHost project in this repo, that's Aspire — we rebuilt the threebit.io site onto it the week of the conference.
• Phi-3 family: Phi-3-mini and Phi-3-medium reached GA in Azure AI Model-as-a-Service; Phi-3-vision (4.2 B params, multimodal) previewed. Small enough to ship inside customer products, capable enough to be useful.
• Copilot+ PCs and Windows Copilot Runtime — a new class of NPU-equipped PCs (40+ TOPS), on-device SLMs, Windows Copilot Library APIs for developers; the controversial Recall feature.
• Copilot Studio Agents — makers can now build autonomous, action-taking agents that orchestrate business processes.
• GitHub Copilot Extensions / Workspace previewed, Azure AI Studio GA, Real-Time Intelligence in Microsoft Fabric.

Why it mattered for us

Aspire hitting GA was the cleanest "we picked the right stack" moment in years. The same AppHost model we'd been wiring up by hand for our customer projects since the Preview was suddenly the officially recommended way to do it.

"Just like Moore's Law helped drive the information revolution, the scaling laws of [deep neural networks] are really… driving this intelligence revolution." — Satya Nadella, Build 2024 keynote.

We bought the framing. We also bought the tooling.