. Windows Essential Business Server 2008 (Windows EBS 2008) part of the Microsoft Windows Essential Business Solutions family is an integrated multi-server solution designed for midsize businesses with up to 300 clients. It provides the essential technology needed for a more secure and reliable infrastructure. Powered by Windows Server 2008 technology Windows Essential Business Server combines software for management messaging and security features into one integrated server solution that dramatically reduces IT complexity and improves efficiency across the business putting IT in control.Windows Essential Business Server 2008 Premium Edition requires a four-server deployment and includes an additional Database Server..