What can be defined as - manages the execution of programs written in any of several supported languages, allowing them to share common object-oriented classes written in any of the languages?

As a part of Microsoft's .NET Framework, the Common Language Runtime (CLR) is programming that manages the execution of programs written in any of the several supported languages, allowing them to share common object-oriented classes written in any of the languages. A program compiled for the CLR does not need a language-specific execution environment and can easily be moved to and run on any system with Windows 2000 or Windows XP .