🚀 .NET 9 Preview 3 – Key Highlights Every Developer Should Know

🔧 What’s New in .NET 9 Preview 3

1. C# 13 Early Features (Experimental)

• Partial improvements to interceptors and params spans
• Experimental support for required fields in records and structs

2. ASP.NET Core Enhancements

• Built-in support for Output Caching
• Improved debugging in Blazor Server & WASM
• OpenTelemetry logging nearing General Availability

3. Native AOT (Ahead-of-Time) Improvements

• Smaller binaries
• Better cold-start performance for microservices
• Improved diagnostics support

4. Performance Gains

• Improved GC tuning
• Lower memory footprint for background services
• 10–15% better performance in I/O-bound workloads

🧰 Dev Tooling: Visual Studio 2025 Preview

• Better IntelliSense for new .NET APIs
• Improved GitHub Copilot integration

⚙️ Compatibility Note

.NET 9 Preview 3 can be installed alongside .NET 6 or .NET 8.

👉 Download .NET 9 Preview 3

📌 Final Thoughts

.NET 9 Preview 3 is paving the way for leaner, smarter, and faster cloud-native development. If you're building APIs, microservices, or frontends with Blazor, this preview is worth your time.

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