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Free. Cross-platform. Open source. A developer platform for building all your apps. Run by the .NET Community team at Microsoft.

Promotional banner for a DEV.to article titled "Supercharging .NET Development with GitHub Copilot and Testcontainers," featuring a "Read the article" call-to-action over an abstract purple geometric background.
Bold headline "Stop Overloading Your Skills" with subtext "The model already knows. Stop wasting tokens." showing a cluttered tablet overflowing papers transforming into a compact phone icon, illustrating condensing agent instructions to save tokens.
Auditing and Telemetry for the Agent Governance Toolkit — a two-panel slide showing an AI agent and governance warnings on the left, and an architecture/data-flow diagram on the right illustrating audit logs written to Blob storage and telemetry sent to Application Insights for .NET Core.
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.
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.
Podcast episode title "Episode 408 — AI DIAGNOSTICS with guest" displayed above a split-screen video call showing two hosts wearing headphones and glasses speaking to camera.
Announcement banner reading "July 2026" with headline ".NET & .NET Framework Updates," featuring a purple .NET logo in a white circle and scattered pink/purple geometric shapes.
CoreCLR Progress Report for .NET MAUI headline announcing updates, with a "dotnet/maui" label and subtext about better tooling, app sizes, and performance on a purple gradient background.
Podcast cover for Merge Conflict — episode "UI.md: Opinionated design rules for coding agents" with hosts credited on the left; dark left panel lists the topic and the right features a bold MERGE CONFLICT title and podcast logo.
MCP for Beginners title slide introducing the Model Context Protocol for AI engineers, developers, and students; central MCP node links to Database, APIs, Files, Search, Cloud and Git, with short link aka.ms/mcp-for-beginners.
.NET 11 Preview 6 announcement: large text on a deep-blue underwater background with a purple cartoon submarine shining a headlight and trailing bubbles.
Promotional banner for a .NET Pittsburgh talk titled "A Python & A Viking warlord: How computer stuff got named?" scheduled 2 July at 4:30 PM EST, featuring speaker Simon Painter and a smiling headshot.
Podcast cover for Merge Conflict titled "Polish Matters: UI, Icons, and AI Design Fails," featuring a large "MERGE CONFLICT" headline on a soft patterned background and host names Frank Krueger and James Montemagno.
Promotional Microsoft banner for One Dev Question titled "What are AI 'hallucinations' and can we fix LLMs so that they don't happen?", showing a guest headshot at right and the Microsoft logo in the top corner.
.NET 8 and .NET 9 end of support on November 10, 2026 — "Plan Your Upgrade" banner with a purple .NET logo over abstract blue curved shapes on a black background.
Promotional banner for .NET + AI Community Standup titled "What's New: Agents, Local AI and More!" showing two circular host headshots on a purple gradient background with a small rocket icon.
Person wearing headphones using a tablet, with overlay text promoting a Modern .NET podcast: "From Pentest to 1.7 Million Downloads — The Lessons Nobody Ever Taught Me" and a call to listen to the latest episode.
"MCP Beyond the Chat Window" banner promoting Binlog MCP Server and urging developers to build diagnostics into CI workflows, with three circular technology icons stacked along the right.
Blazor Community Standup banner announcing "Generative UI with AG-UI & A2UI," with a left-aligned headline and speaker credits and four circular speaker headshots stacked on the right.
.NET MAUI Community Standup banner announcing “SkiaSharp 4 has arrived!” with three circular headshots and host names David Ortinau, Gerald Versluis, and Matthew Leibowitz.
Banner reading "Modernize .NET in the GitHub Copilot app" with a large left-aligned headline and two stacked circular icons — the GitHub Copilot pilot logo and a purple .NET square — on a dark purple-to-black gradient background.
Promotional Microsoft "One Dev Question" graphic showing a smiling presenter beside the Microsoft logo and the question: "Why does Windows sometimes say a file is 'in use' even when I've closed the app that was using it?"
Promotional banner for Microsoft .NET Day titled "Cloud-Native Data Without Starting Over" (Agentic Modernization), showing the session title, Microsoft logo, and a circular photo of a smiling presenter.
Podcast cover for "The Modern .NET Show" with a purple robot mascot holding a microphone over blurred source code; episode title transcribed: "From pentest to 1.7 million downloads, Part 1: The headers I'd never heard of."
Podcast promo for Microsoft/.NET Rocks!: "DNSimple CLI with Anthony Eden" — two enthusiastic hosts, one leaning into a vintage microphone and reaching forward while the other smiles with sunglasses and points, set beside a purple panel showing the show title and Microsoft logo.
Conference slide for .NET Day — Agentic Modernization 2026 (Microsoft) promoting the session "Cold Case or Active Asset? A 2005 WinForms LoB Application" with the presenter's headshot shown at right.
Two hosts laugh while recording a tech tutorial/podcast about version control, seated at laptops with microphones; overlaid title reads "Getting Started with Git for Game Dev" alongside the "Quest to Compile" logo and hashtag #QuestToCompile.
Promotional banner for a Blazor Community Standup titled "WebMCP in Action with Blazor," showing three circular speaker headshots on a purple gradient background with event branding.
Promotional Q&A graphic asking “What do you think indie devs will love about Build 2026?” alongside Microsoft branding and a smiling woman’s headshot shown as the respondent.
Promotional banner for Microsoft .NET Day "Agentic Modernization 2026" session titled "Modernize .NET Apps and Add Agentic Functionality in Minutes," showing the Microsoft logo and three circular speaker headshots.
Microsoft Build banner titled Using AI tools to teach old apps new tricks (BRK220), with Microsoft logo, three circular speaker headshots, and colorful pixel blocks on a black background
Merge Conflict Podcast Title Screen. Text reads: Inside the New GitHub Copilot App: Sessions, Canvases, Automations Merge Conflict with Frank Krueger and James Montemagno.
Event banner promoting .NET Day — Agentic Modernization 2026 with the headline "Stop Rewriting. Start with Aspire." Microsoft logo at top right and a circular headshot of a smiling speaker wearing a cap and glasses.
Promotional banner for .NET Day Agentic Modernization 2026 by Microsoft: "Modernize .NET Apps with GitHub Copilot" session listing a speaker, with Microsoft logo and a circular headshot of a smiling woman.
spot art. text reads: Modernize intelligent apps and agents with .NET that scale as you grow
.NET AI Community Standup promotional slide titled "Why Orleans for AI Agents," listing speakers Bruno Capuano and Konstantin Semenenko, with two circular headshots—one man at a podium pointing, another smiling with glasses—on a purple gradient background.
Promotional banner for .NET Day — Agentic Modernization 2026 (Microsoft) titled "Modernize Fast, Migrate Faster: .NET Apps to Azure with Modernize CLI," showing a smiling man holding a koala.
SkiaSharp 4.0 general availability announcement displaying the "SkiaSharp" title and large green-blue "4.0", with a pencil-sharpener icon on the left and a multicolored interlocking-loops logo on the right over a dark background.
Promotional Microsoft graphic asking "What were some of the most surprising things for devs at Build 2026?" alongside the Microsoft logo and a portrait of a smiling woman with a speaker name label.
Microsoft Build session title slide BRK206: "Your agent, anywhere: MultiClient, MultiDevice with GitHub Copilot SDK," with two circular presenter headshots, Microsoft logo, and colorful pixel-like accents on a black background.
Promotional banner for Microsoft .NET Rocks! podcast episode "Data Centers in Space Geek Out," showing two enthusiastic male hosts—one leaning into a vintage microphone and reaching out, the other grinning in sunglasses and pointing at the viewer.
Headline "App Modernization Done. Now Let's Make It Smarter." promoting .NET Day — Agentic Modernization 2026 with Microsoft logo, plus a circular photo of a smiling man pointing toward the camera from behind a podium.
Microsoft Build session title slide for BRK243, "Claw and agent harness in Microsoft Foundry," showing three circular speaker headshots on the right, Microsoft logo and colorful pixel block graphics on a black background.
Marketing banner for MSBuild Binlog MCP Server, an AI-powered build investigation tool; purple background with a dark terminal showing a red error "error CS0246: Foo not found," a magnifying glass highlighting the error, and a badge reading "15 tools • 4 categories" and ".NET."
Microsoft Build session title slide reading "Building WinUI Apps with C# First Patterns and AI Assisted Workflows," featuring the Microsoft logo, session code OD854, and colorful pixelated accents on a black background.
Microsoft One Dev Q&A graphic showing the question “What’s one common mistake developers make when building cost-efficient AI apps?” in a stylized window, accompanied by a headshot labeled Priya Sathy and the Microsoft logo.
.NET Data Community Standup — "Temporal tables and constraints in SQL Server and PostgreSQL 18" promotional banner with large title on a textured pink background and two circular speaker portraits: a bearded man (photo) and a smiling cartoon caricature.
Promotional banner for .NET AI Community Standup titled "Multi‑Agent Apps with Aspire + MAF," showing two photographed speakers in circular frames against a purple gradient background.
spot art. text reads: Evolving WinUI for the era of AI and Agents
Spot art. Photo of presenter(s) text reads: Tell me about the labs at Build
A developer wearing headphones while listening to a podcast and coding. text reads: Modern .NET Show Beyond the Chatbot: AI-Enabled .NET MAUI Apps with Codrina Merigo
spot art. text reads: the iq series. work iq microsoft iq series all episode available watch now and claim your badge
Spot art. Photo of presenter(s) text reads: What was the process of open-sourcing typescript, chakra, .net, vscode, and the copilot extension?
Spot art. Photo of presenter(s) text reads: Aspire for agents: Transform how you build and deploy distributed apps
Merge Conflict Podcast Title Screen. Text reads: Merge Conflict with Frank Krueger and James Montemagno. WWDC Deep Dive: Apple’s New AI for Developers