The version of Windows Server that is part of Small Business Server 2008 and Essential Business Server 2008, known as Windows Server 2008 for Windows Essential Server Solutions (WinWESS) (also known as "Windows Server 2008 Standard FE") is available outside the product suite, supporting a maximum of 15 Client Access Licenses.
Отличие одной от другой в наличии в версии Premium дополнительной лицензии Windows Server 2008, SQL Server 2008 и ISA Server 2004Windows Small Business Server 2008 лицензируется по схеме лицензия на сервер (Server, L) и лицензия клиентского доступа (CAL).