What does JIT compilation do in .NET?

JIT compilation in .NET is used to execute MISL on the target device. CLR translates, while JIT loads it on the computer. The MISL is stored in .NET assembly when the developer writes codes in .NET language. The JIT compilation only derives or translates the MISL code and then utilizes CPU architecture for execution. JIT also ensures that every written code fits in the given memory space. JIT is responsible to execute the written code according to the native code of the target device. Additionally, JIT stores the code in the native language for further use.