The ASP.NET Team@aspnet

The *official* account for Microsoft

 Redmond, WA and Worldwide
dotnet.microsoft.com/apps/as…
Joined October 2011
440 Photos and videos
🔥 #ASPNET Core meets discriminated unions! Model finite states with closed hierarchies, improve API contracts, and let the compiler catch more bugs before production. 💪⚙️ Ready for stronger domain modeling? 📖 Read: msft.it/6015abPR7 #dotNET #CSharp
A graphic featuring a hexagonal logo with the title 'C# 15' and subheading 'Unions and Closed Hierarchies in ASP.NET Core.' It includes a flowchart showing 'Result' branching into 'Success' and 'Error,' with a 'Loading' state.

ALT A graphic featuring a hexagonal logo with the title 'C# 15' and subheading 'Unions and Closed Hierarchies in ASP.NET Core.' It includes a flowchart showing 'Result' branching into 'Success' and 'Error,' with a 'Loading' state.
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From #ASPNET Core APIs to AI agents, cloud-native apps, MAUI, Aspire, or performance tuning ⚡, your story could inspire developers worldwide. 🌎💜 Share your .NET journey! 📖 Read more: msft.it/6016abMmC #dotNET #CSharp
A vibrant purple background features the text 'Share your .NET story' in bold white letters. Surrounding a prominent '.NET' logo are speech bubbles, suggesting conversation. The caption reads 'Customer Stories' and highlights user experiences with .NET.

ALT A vibrant purple background features the text 'Share your .NET story' in bold white letters. Surrounding a prominent '.NET' logo are speech bubbles, suggesting conversation. The caption reads 'Customer Stories' and highlights user experiences with .NET.

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🌐 What's next for msft.it/6018arqAO Core & Blazor? 🚀 This VSLive session explores the future of web development in .NET 11, from platform priorities to emerging opportunities. ⚡ .NET devs won't want to miss this one. 👀 🎥 Replay: msft.it/6019arqAP
A promotional image for a session titled 'Explore the Future of ASP.NET Core & Blazor in .NET 11' at Microsoft HQ. It features a circular photo of a middle-aged man with glasses, and text highlights the event details.

ALT A promotional image for a session titled 'Explore the Future of ASP.NET Core & Blazor in .NET 11' at Microsoft HQ. It features a circular photo of a middle-aged man with glasses, and text highlights the event details.

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Blazor's next chapter is being written right now. Daniel Roth previews .NET 11 at VSLive! MSHQ: msft.it/6016aPNNe
A promotional image for an event at Microsoft HQ titled 'Explore the Future of ASP.NET Core & Blazor in .NET 11' featuring a circular photo of Daniel Roth. The background has a gradient with blue and green hues.

ALT A promotional image for an event at Microsoft HQ titled 'Explore the Future of ASP.NET Core & Blazor in .NET 11' featuring a circular photo of Daniel Roth. The background has a gradient with blue and green hues.

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.NET August servicing is live! 🔧 Security fixes across .NET 10/9/8 (RCE, EoP, DoS, info‑disclosure) + updated #ASPNET Core, EF Core & Runtime (10.0.11 / 9.0.19 / 8.0.30). Patch early, patch often. 👉 Read the blog: ift.tt/RTFpPbZ
August 2026 announcement: .NET & .NET Framework updates, bold black headline on a pale pink background with a purple .NET logo and decorative gradient shapes.

ALT August 2026 announcement: .NET & .NET Framework updates, bold black headline on a pale pink background with a purple .NET logo and decorative gradient shapes.
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🧠⚙️ Visual Studio’s built‑in Agent Skills are getting seriously clever. They now bring .NET + Azure expertise straight into the IDE, with project‑aware reasoning and smarter automation. 👉 Dive in: buff.ly/9QfBbgk
Promotional graphic showing Visual Studio's built-in Agent Skills for .NET and Azure, featuring a screenshot of the Agent Skills settings panel on the left and the headline "Built-in Agent Skills bring .NET and Azure expertise into Visual Studio" on the right.

ALT Promotional graphic showing Visual Studio's built-in Agent Skills for .NET and Azure, featuring a screenshot of the Agent Skills settings panel on the left and the headline "Built-in Agent Skills bring .NET and Azure expertise into Visual Studio" on the right.
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〰️ HAPPENING TODAY at 10AM PT 〰️ Join the ASP.NET Core team for a tour of what's new for #ASPNET Core and Blazor in .NET 11 Preview 6: Async minimal API validation, automatic CSRF protection, unions, and more. See you LIVE here ➡️ buff.ly/X3NgTUO #dotNET
Banner for ASP.NET Core Community Standup titled "What's new in .NET 11 Preview 6?" showing two circular headshots and a line listing the event hosts.

ALT Banner for ASP.NET Core Community Standup titled "What's new in .NET 11 Preview 6?" showing two circular headshots and a line listing the event hosts.
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HAPPENING TODAY - #ASPNET Community Standup Learn how dotnet/skills helps AI assistants generate more accurate, idiomatic .NET code using skills, tools, and real-world evaluation scenarios. See you here at 10 AM PT ➡️ buff.ly/B9nmUGc
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〰️ HAPPENING TODAY at 4PM PT 〰️ #ASPNET Community Standup: Boosting Razor productivity Walk through the latest Razor editor and tooling improvements that help streamline development, reduce friction, and improve reliability. See you LIVE here ➡️ buff.ly/Hrv0KXa
Spot art. Photo of presenter(s) text reads: ASP.NET Core Community Standup Boosting Razor productivity

ALT Spot art. Photo of presenter(s) text reads: ASP.NET Core Community Standup Boosting Razor productivity
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〰️ HAPPENING NOW at .NET DAY 〰️ Modernize .NET Apps with GitHub Copilot In this session, we'll show how GitHub Copilot modernization helps teams assess, plan, and execute .NET upgrades using AI-assisted workflows. Join us LIVE at 9AM PT ➡️ aka.ms/dotNETday/2026-x #dotNET
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➡️ HAPPENING TOMORROW ⬅️ Join us at 9AM PT for .NET Day on Agentic Modernization – demos, expert Q\&A, actionable strategies to future-proof business. Make sure to set your reminder → aka.ms/dotNETday/2026-x #dotnetday #azurepaas #dotnet #githubcopilot
A promotional agenda graphic for “.NET Day: Agentic Modernization” with a purple‑pink gradient background and 3D geometric shapes on the left. The right side lists the event schedule with session times, titles, and speakers from 9:00 AM to 12:00 PM PDT. The bottom displays the event date, June 16, 2026, and an RSVP link.

ALT A promotional agenda graphic for “.NET Day: Agentic Modernization” with a purple‑pink gradient background and 3D geometric shapes on the left. The right side lists the event schedule with session times, titles, and speakers from 9:00 AM to 12:00 PM PDT. The bottom displays the event date, June 16, 2026, and an RSVP link.

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.NET Day on Agentic Modernization is here! ⚡ Premier .NET + AI engineers break down cloud migration, AI‑driven systems, and automated cloud dev. Unlock faster modernization + more time for real innovation. RSVP ✒️ aka.ms/dotNETday/2026-x
photos of speakers for .NET Day Agentic Modernization

ALT photos of speakers for .NET Day Agentic Modernization

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The .NET Day on Agentic Modernization agenda is live—see the new blog for what's in store, then join us to learn how to modernize apps without the rewrite. aka.ms/dotnetday/blog #modernize #dotnetday #githubcopilot #azurepaas
A promotional graphic for “.NET Day: Agentic Modernization” with a purple‑to‑pink gradient background and 3D geometric shapes on the left. On the right, a schedule lists sessions from 9:00 AM to 12:00 PM PDT, including topics like modernizing .NET apps with GitHub Copilot, Aspire, WinForms modernization, cloud‑native data, Azure migration with Modernize CLI, adding agentic functionality, and making apps smarter. The event date reads June 16, 2026, 9:00 AM–1:00 PM PDT, with an RSVP link at the bottom.

ALT A promotional graphic for “.NET Day: Agentic Modernization” with a purple‑to‑pink gradient background and 3D geometric shapes on the left. On the right, a schedule lists sessions from 9:00 AM to 12:00 PM PDT, including topics like modernizing .NET apps with GitHub Copilot, Aspire, WinForms modernization, cloud‑native data, Azure migration with Modernize CLI, adding agentic functionality, and making apps smarter. The event date reads June 16, 2026, 9:00 AM–1:00 PM PDT, with an RSVP link at the bottom.
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The #ASPNET Core hosting explanation that makes developers stop and go “wait… WHAT?” 🧠 This changes how you think about “web projects” in .NET Core surprisingly fast. Philip Japikse breaks it down here: piped.video/OBOkxvDHaVs
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〰️ Coming up at #MSBuild for every dev moving towards AI 〰️ Scott Hanselman and Mark Russinovich learn...how agents reshape software engineering Tune into the livestream ➡️buff.ly/08kNZWk
spot art. text reads: Coming to BUILD June 3 @ 2:45 PM PT, Scott and Mark learn...how agents reshape software engineering Register NOW so you don't miss it.

ALT spot art. text reads: Coming to BUILD June 3 @ 2:45 PM PT, Scott and Mark learn...how agents reshape software engineering Register NOW so you don't miss it.

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🎊 🙌 Microsoft BUILD kicks off in 1 hour 👏 🎉 Day 2 sessions stream LIVE today at 9:00 AM PT! Join us live here ➡️ 🎥 buff.ly/wy5QTHS
spot art. text reads: BUILD TODAY Day 2 starts in just 1 Hour. Livestream kickoff: 9:00 AM PT

ALT spot art. text reads: BUILD TODAY Day 2 starts in just 1 Hour. Livestream kickoff: 9:00 AM PT
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🎊 🙌 Microsoft BUILD kicks off in 1 hour 👏 🎉 Day 1 and the Keynote streams LIVE today at 9:30 AM PT! Join us live here ➡️ 🎥 build.microsoft.com/sessions…
spot art. text reads: BUILD TODAY Day 1 starts in just 1 Hour. Livestream kickoff: 9:30 AM PT

ALT spot art. text reads: BUILD TODAY Day 1 starts in just 1 Hour. Livestream kickoff: 9:30 AM PT
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Refreshing after a form submission can accidentally repeat the same action twice 🚨 Philip walks through the PRG pattern and why it matters for #ASPNET Core apps. More from this VSLive! Las Vegas session: piped.video/2DUALsg6kq4
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Go deep on real code, real systems, and real workflows with the teams building and scaling AI. 🎊 🙌 Microsoft BUILD kicks off tomorrow! 👏 🎉 Register to set your reminder and tune in to the livestream at 9:30 AM PT! 🎥 buff.ly/wy5QTHS
spot art. text reads: BUILD Happening Tomorrow Livestream kickoff: 9:30 AM PT Two days. Hands-on sessions. No Fluff.

ALT spot art. text reads: BUILD Happening Tomorrow Livestream kickoff: 9:30 AM PT Two days. Hands-on sessions. No Fluff.
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Relational → NoSQL… with Copilot doing the heavy lifting 😎 Sergiy walks an old ASP.NET app through schema analysis, PK design, bicep infra, JSON data migration + full code rewrite using the Cosmos DB Agent Kit. Watch the session → buff.ly/pngMS7v
Spot art. Photo of presenter(s) text reads: Migrating ASP.NET to Azure Cosmos DB w/ GitHub Copilot | Sergiy Smyrnov | Azure Cosmos DB Conf 2026

ALT Spot art. Photo of presenter(s) text reads: Migrating ASP.NET to Azure Cosmos DB w/ GitHub Copilot | Sergiy Smyrnov | Azure Cosmos DB Conf 2026
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