The Small Business Edition provides a complete Microsoft Dynamics CRM solution for small businesses, with a focus on ease of installation and reduced total cost of ownership. Microsoft Dynamics CRM Version 3.0 Small Business Edition is designed to run on Windows Small Business Server 2003 and allows for up to 75 simultaneous users. You can have only one domain on a Small Business Server network and because only one domain is supported, there can be no trust relationships with other domains. It is highly recommended that your Windows Small Business Server 2003 computer be used as a dedicated server and not as a client computer and that Microsoft Dynamics CRM client for Outlook not be installed on your Windows Small Business Server 2003 computer.