A module is a discrete unit of functionality which you can compile, run, test and debug independently.
Modules contain everything that is required for their specific tasks: source code, build scripts, unit tests, deployment descriptors, and documentation. However, modules exist and are functional only in the context of a project.
Configuration information for a module is stored in a .iml module file. By default, such a file is located in the module's content root folder.
Development teams, normally, share the .iml module files through version control.
In this section: