Pro Image Software is a service provided to photographers and their customers.  With this website, photographers can shoot an event, upload all of the photos in categories, and allow their customers to come to the website and view and purchase those photos.  Pro Image is operated by an extensive and complex CMS, wherein each photographer controls every aspect of his personal event pages, offerings, and invoices.  Beyond that, the administrator of the software can manage all of his clients (the photographers), their events, and the print orders that come through the website.