For more tutorials on .NET Core, visit FullStackPrep.Dev

What is .NET Core? The Modern Framework for Building Cross-Platform Apps

Are you still working with the traditional .NET Framework and wondering what all the hype is around .NET Core?

Let’s explore why .NET Core has become the go-to platform for building modern, scalable, and high-performance applications — and how it differs from its predecessor.

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🚀 What is .NET Core?

.NET Core is a lightweight, cross-platform, open-source framework developed by Microsoft. Unlike the classic .NET Framework (which runs only on Windows), .NET Core runs on Windows, macOS, and Linux.

Here’s what sets it apart:

• ✅ Cross-platform development
• ⚡ High performance via Kestrel web server
• 🔄 Modular with NuGet-based dependencies
• 🔐 Built-in support for Dependency Injection
• 🌍 Perfect for microservices & cloud-native apps

💻 .NET Core vs .NET Framework

Feature	.NET Core	.NET Framework
Cross-platform	✅ Yes	❌ Windows only
Open-source	✅ Fully OSS	❌ Partially
Performance	✅ Faster (Kestrel)	❌ Slower (IIS)
Microservices support	✅ Designed for it	❌ Legacy support
Dependency Injection	✅ Built-in	❌ Manual setup

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👨‍💻 Real World Use Case

Imagine you’re building a lightweight, containerized REST API.

With .NET Core, you get:

• Blazing-fast startup
• Native Docker support
• Simplified middleware and routing
• Out-of-the-box dependency injection

✅ It’s built for today’s cloud-first and microservice-driven architecture.

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📚 Deep Dive Tutorial

We’ve explained this in full with examples, diagrams, and interview questions here:

👉 What is .NET Core and how is it different from .NET Framework?

Whether you’re a beginner or preparing for an interview, this guide covers:

• Architecture insights
• CLI usage
• Core libraries
• .NET 6+ changes

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🧠 Why You Should Care

• Employers expect .NET Core knowledge in 2025+
• Azure, AWS, and GCP fully support it
• It’s the future of Microsoft’s developer stack

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💬 Share Your Experience

Have you migrated to .NET Core yet?

What’s been your biggest learning curve?

Drop your thoughts in the comments 👇