C# is a modern, object-oriented programming language developed by Microsoft as part of its .NET initiative, first released in 2000 and currently at version 15 (2026). It combines the power of C++ with the simplicity of Visual Basic, running on the Common Language Runtime (CLR) which provides automatic memory management, type safety, and cross-platform support through .NET. The language has evolved significantly with features like async/await, LINQ, pattern matching, and nullable reference types that prioritize developer productivity and code safety. Think of C# as a strongly-typed, garbage-collected language where you rarely manage memory manually but gain fine control when needed — understanding this balance between safety and performance is key to mastering the language.