Assembly

• An assembly is a file that  is automatically generated by the compiler up on successful completion of  every .NET application.It can be either a dynamic link library or an executable file.
• [Dynamic Link Library(DLL) - A DLL is a library that contains code and data that can be used by more than one program at the same time. For example, in Windows operating systems, the Comdlg32 DLL performs common dialog box related functions. Therefore, each program can use the functionality that is contained in this DLL to implement an Open dialog box. This helps promote code reuse and efficient memory usage.]
• An assembly is generated only once for an application and up on each subsequent compilation the assembly gets updated