The main focus of this scenario is simply to provide a structure for packages. This concerns all packages equally, whether they are providers or users.

The top level in the package hierarchy is formed by structure packages, generally consisting of several main packages. You then create the associated sub-packages from within each main package. This process allows you to specify the number and granularity of sub-packages in a main package, along with the depth to which they are nested. To make package elements visible from outside the package, you create appropriate package interfaces.