Framework V - 4 ((install))

Since you said — I assume you want a notable technical feature introduced in .NET Framework 4 (released 2010).

Framework 3.0 introduced WCF, but it was famously complex—often jokingly called "The configuration hell." Framework 4.0 introduced "WCF Simplification." framework v 4

Here is a breakdown of the framework based on performance, feature set, and developer experience. Since you said — I assume you want

[Export(typeof(IPlugin))] public class MyPlugin : IPlugin { public void Execute() => Console.WriteLine("Hello from plugin"); } Console.WriteLine("Hello from plugin")