All 16 .NET vs .NET Framework questions
More in .NET vs .NET Framework
What is the fundamental difference between .NET (formerly .NET Core) and .NET Framework? Should a brand-new .NET project in 2026 ever target .NET Framework instead of modern .NET? What are the practical differences between .NET Framework, .NET Core, and modern (unified) .NET? What is .NET Standard, and why is it less relevant now compared to a few years ago? How does performance typically compare between .NET Framework and modern .NET (e.g., .NET 8)? Why is .NET Framework considered to be in 'maintenance mode', and what does that mean practically for teams still using it? How does cross-platform support differ between .NET Framework and modern .NET? How does packages.config differ from PackageReference, and which is used in Framework versus modern .NET projects? Can .NET Framework and modern .NET applications be run side by side on the same machine, and how does that work? How does language version support differ between .NET Framework and modern .NET, specifically regarding C# language features?
Advertisement
.NET › .NET vs .NET Framework

Why did Microsoft skip version 4 and name the unified platform '.NET 5' instead of '.NET Core 4'?

Intermediate

Answer

Microsoft skipped .NET 4 specifically to avoid confusion with .NET Framework 4.x, since the new unified platform was meant to signal a clean break as the singular future of .NET -- dropping the 'Core' branding entirely starting with .NET 5, with .NET Framework remaining a separate, legacy product line receiving only security and critical fixes.
// Naming timeline:
// .NET Framework 4.8 (legacy, Windows-only)
// .NET Core 1.0, 2.0, 3.0, 3.1 (cross-platform, transitional)
// .NET 5, 6, 7, 8, 9... (unified platform, 'Core' dropped)
Real-world example New developers researching .NET online must learn to distinguish '.NET Framework 4.8' from '.NET 8' since both use similar naming but represent entirely different, non-interchangeable platforms with different capabilities.

Common follow-ups: Is .NET Framework receiving new features going forward?;How long will .NET Framework continue to be supported?

.NET vs .NET Framework;CLR & Runtime
All 16 .NET vs .NET Framework questions