Enterprise Information Distribution System

I have recently started to manage a project to install an enterprise information distribution system (managing report distribution to internal consumers and external consumers, namely customers and vendors). We have brought together reports from various systems into one system which can more efficiently maintain the distribution and management of these reports.
We have a working model of the system, but I would like to know how other businesses have tried to organize the report in their enterprise in order to allow internal users to know what reports are available to them (out of hundreds) and easily assign access etc.

I welcome anyone to share your experiences.

Thanks,
Greg Ross
Sr. I.T. Project Manager