It is too easy to install an instance of Reporting Services without thinking much about the Report Catalog (Report Server and Report Server TempDB articles). As a nice primer into Report Catalog architecture, this primer by Denny Lee is well worth a read.
Typically, in the large organisation, planning and deploying such an architecture will most likely require involvement of cast of thousands including enterprise architects.
Thanks to Denny Lee. Be sure to read the ping backs following the article.