Compilation basics in .NET

Compiler is a computer program that transforms the source code into a target language which can be executed directly. 

Following are few concepts behind compilation

• JIT - Just In Time compiler
• Ahead of time compilation

Compilation in ASP.NET #

Intermediate language (IL)
Also known as MSIL (Microsoft Intermediate Language). All .NET source code is compiled to IL which is then converted to machine code. 

Resources

http://blogs.telerik.com/justteam/posts/13-05-28/understanding-net-just-in-time-compilation

http://msdn.microsoft.com/en-us/library/ht8ecch6(v=vs.90).aspx