The JIT(Just-In-Time compiler) is a part of Common Language Runtime (CLR) in .NET framwork, which is responsible for managing the execution of .NET programs regardless of any .NET programming language. The language-specific compiler converts the source code to the intermediate language. It is intermediate language is then converted into the machine code by the Just-In-Time (JIT) compiler. These machine code is specific to the computer environment that the JIT compiler runs on.