Windows Vista Business is specifically designed for small and medium-sized enterprises, while Windows Vista Enterprise is only available to customers participating in Microsoft's Software Assurance program.
Windows Vista Business on spetsiaalselt kavandatud väikeste ja keskmise suurusega ettevõtete jaoks, samas kui Windows Vista Enterprise on saadaval ainult klientidele, kes osalevad Microsofti Software Assurance'i programmis.