Distinguished Engineer at Microsoft, Creator of NuGet, SignalR, ASP.NET Core, Aspire and Barbadian 🇧🇧, Tennis Player, Father, other half @symonefowler

Redmond
When I got a job at Microsoft, there was an article in the local news paper and my parents framed it.
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David Fowler retweeted
Aspire Bytes: Take a tour of the dashboard by @aspire.dev piped.video/watch?v=IeTaiwnj… #aspnetcore #aspire
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TLDR: Just because you can doesn’t mean you should. Same goes for agents. You can save tokens by re-using things, languages, libraries etc.
Disagree just as high level languages help us code better - there's less to think about, it will be the same for AI. Why reach for ASM when you can use Rust - there's so much more that can go wrong. By this logic AI will also forego testing because they have so much intelligence to just reason through it.
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Rust, worktrees 😬
Was wondering where my disk space went. Therefore this exists now. You can simply wish software into existence.
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David Fowler retweeted
Now fully cross platform for all major operating systems
Was wondering where my disk space went. Therefore this exists now. You can simply wish software into existence.
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Initially Copilot was just a brand that multiple (some may argue too many) adopted in our products. Each implementation was unique and product experiences varied widely. Now, company wide, we are using the same harness, the GitHub Copilot SDK. This is a monumental achievement for a company the size of Microsoft.
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David Fowler retweeted
Microsoft shipped a really compelling product on top of @OpenClaw today. We worked with them since March to make the codebase ready for large-scale deployments, they are a great partner and open-source contributor. 🙏🦞
Today we announced the preview of Microsoft Autopilot is rolling out to our first customers - "Autopilot is a persistent, proactive and personal agent that keeps working even when you’re not" It's been a while since I updated you all on what we are building. First Scout is now Autopilot, and my team leads building this personal agent. We are building Autopilot on @openclaw, working with @steipete and the OpenClaw Foundation to make it a fantastic enterprise grade runtime. blogs.microsoft.com/blog/202… Re-introducing Sebastian, my Autopilot - and he is as excited as I am!
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David Fowler retweeted
Hot take: if you didn't read what your AI wrote, you shouldn't expect me to read it either. We need something stronger than TL;DR. TAI:DR - Too AI. Didn’t Read. tai-dr.com You're welcome, internet.
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David Fowler retweeted
We’re building Copilot as a new OS for work that spans every model, every form factor, and every task. Today, we’re announcing our biggest update to Copilot to date, bringing four things together: · Autopilot: proactive and long-running agent built for the enterprise · Code: build apps with Copilot, hosted inside your company’s tenant · Home: Chat + Cowork together · Office: now fully embedded in Copilot (and Copilot embedded in Office, of course!) Plus, you can invoke Copilot in Teams, and we’re introducing Today, a proactive experience that surfaces the most important information from across M365 without needing to ask for it. The way we work is changing and so are our workflows. This update brings AI into that flow, from answering a question, to building an app, to getting work done on your behalf.
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David Fowler retweeted
Starting in 10 minutes... @maddymontaquila is going to finally try out 13.6 LIVE on #AspiriFridays. Wish us luck!!! piped.video/watch?v=DtdP0JBa…
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Internal memos: Microsoft shakes up communications as Nadella makes a push to build in public geekwire.com/2026/internal-m… // def looking forward to those authentic dev team comms efforts that arise from legal review.
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David Fowler retweeted
aspire.dev/ fyi. You can write tests using emulators, whether they're container images, or sdk wrapping processes, it's really flexible. It's like test containers but better, and aids local dev experience. There's many ways to use it, but test first is a good start
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David Fowler retweeted
How to render a huge PR with over a million changed lines across 2,200 files and 400+ review comments? The tricky part isn’t the code, it’s the comments. I wrote about how we tackled this in the GitHub Copilot app: github.blog/engineering/user…
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David Fowler retweeted
The bad .NET takes are getting meme-worthy
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David Fowler retweeted
Just one engineer and a team of agents ported the GitHub Copilot agent runtime to Rust, shipping 800,000 lines of production code while retaining code quality. 🚀 How it worked 👇 github.blog/ai-and-ml/genera…
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David Fowler retweeted
The @AmericanExpress Travel website blocks @Muse from working. The amex website is a CHORE to use. It logs you out after just a few minutes with so much friction to sign in. And remember this device never works either. Agents will re-litigate all the services we use. If your website / service is not agent friendly you will lose.
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🥳 Excited to start revealing what we've been working on in the last few months. First, we decided to reinvent Kubernetes for agentic workloads with statefulness and fast resumption. Secondly, we are building an agentic orchestrator that will be Google's open agentic orchestrator and runtime. github.com/google/ax
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People have dismissed actor frameworks for decades as niche and now stateful compute is in style with agents…
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I got access to jev, now what 😅
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Code may be cheap to write but code sharing is still the fastest, easiest and cheapest way to reduce bugs and enforce consistency.
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