.NET 11: What's New in Blazor (30+ Features)

The demands on modern web apps keep rising – performance, security, observability, and now agentic capabilities. In this session, Daniel Roth (Principal PM for ASP.NET Core & Blazor) walks through what's coming in .NET 11 for web development, with live demos on .NET 11. From a stronger foundation (Kestrel perf, native OpenTelemetry, DBSC) to a filled-out Blazor static SSR story, distributed apps with Aspire, and building agentic UIs with AG-UI – this is a full tour of the .NET 11 web stack. ⏱️ Chapters 0:00 Intro: the future of ASP.NET Core & Blazor in .NET 11 1:19 The .NET 11 roadmap & six themes 3:35 Strengthening the foundation: performance 4:54 Security: Kestrel, CSRF, DBSC 5:54 Observability: native OpenTelemetry 6:39 Modern stack: minimal APIs, SignalR, Blazor 8:00 What's new in Blazor: static SSR, WebAssembly, C# unions 9:37 Demo: minimal APIs, OpenAPI 3.2 & OpenTelemetry 12:02 Demo: new Blazor components (environment, label, quick grid) 15:48 Demo: virtualize with variable height & anchor modes 17:54 Demo: temp data & circuit pause/resume 21:45 Demo: client-side, localized & async validation 26:18 Distributed apps with .NET Aspire & the Blazor gateway 34:31 Building agentic web apps with AG-UI 36:43 Demo: the Blazor AG-UI dojo 46:05 AI-assisted .NET development: skills, agents, tools, evals 48:48 Demo: .NET skills & the kanban board eval 53:43 Wrap-up: the big picture & how to get started 📝 Resources ASP.NET Core roadmap: https://aka.ms/aspnet/roadmap Sample code: https://github.com/danroth27/AspNetCo... .NET skills repo: https://github.com/dotnet/skills AG-UI protocol: https://ag-ui.com 🎤 Speaker Daniel Roth – Principal Product Manager, ASP.NET Core & Blazor, Microsoft 🤝 Devessence The team behind this work builds .NET, Blazor & AI-powered solutions. Looking for a professional consulting partner? Get in touch. 🔗 https://devessence.com   / devessence   #Blazor #dotnet #dotnet11 #ASPNETCore