The description could be more detailed:

SIMPL should allow the provision of user-friendly IT service catalog functions to allow browsing through available services, modules, support, users …

The middleware will allow different views depending on the user role and the configuration of the Dataspace. To this end, the middleware will allow  easy installation of the modules the Data Space owner decides and easy setting up of the catalog.

The catalog, should be stuctured with a Scheme that helps the user to perform the searches, through well defined categories. It is very important in the design to have stackholders in touch with the final users reality.