level 0
"shared server" - no frills single site package - small business
includes email, webmail, website, dns management

level 1
"virtual server" - small business with VoIP
includes email, webmail, website, dns management and internet telephony and is not shared with others

level 2
"dedicated server" - power user
includes email, webmail, website, ftp dropbox/private client job system, dns, databases and more

level 3
multiple site package - power user with multiple domain names and VoIP
as level 2 but for multiple domains/sites and also suitable for resellers and web designers