A minimum recommended scenario involves a web server and a zone consisting of a database server, file and e-mail services.
The datacentre zone may span from one single server hosting the database, file and e-mail services, to one server for each.
This scenario can be illustrated as follows:
|Protocol and service used for the different arrows
|| HTTP, default port 80 (AES Encrypted content)
|| File Share (may vary according to document archive provider)
|| Database proprietary protocol (as implemented by the database drivers)