DLL Vs EXE

exe file is a excutable file which runs in a seperate process which is managed by OS,where as a dll file is a dynamic link library which can be used in exe files and other dll files

DLL - inprocess
DLL runs along with the application which is sharing that particular DLL. If we interrupt that application that DLL also affected which in turn affects all onter applications which is using that application.

EXE - outprocess
EXE runs seperately.

In short the EXE is not resuable in other application, while the DLL is.

DLL stands for dynamic-link library and is Microsoft’s implementation of a shared library. This means that many different programs can use this library to do their tasks making it easier on the programmers so that they do not have to keep reinventing the wheel each time they write software. In simple terms a .DLL file will contain logic that other programs will use.

EXE stands for executable and denotes that a program is executable. This just means that if you double click on the file a program will run, normally with some kind of interface for a user to interact with. The file formats for EXE and DLL actually the same.

DLL: Doesn't have own main entry point, handled by other method(s).
EXE: Have own entry point, handled by OS.