Asperto.Net can work with you to plan and produce websites that can be scaled.

Small

A simple trade website may only require a presence of a few descriptive pages and a contacts action form.  This would be like an on-line brochure.

Medium

A projects office could have a public brochure-site, but add a client login.  CLients logging-in would be then taken to a hitherto unseen page where their account would be shown to them and they could see dynamic project-plan presentation.

 Large

A Sports Governing body could set up a central site (Say SportsPlan.com).  From this, the main Portal can support sub-portals, that can in turn support its own sub-sub portals: and so on.