This document provides an overview of Windows Server 2008. It describes the editions of Windows Server 2008, including Standard, Enterprise, and Datacenter editions. It explains how to install the Enterprise edition, covering the system requirements and 5 step installation process. It introduces Server Manager, the new console for managing server roles and features. It describes key server roles like Active Directory Domain Services, DHCP Server, and DNS Server. It also outlines some protection and security tools available in Windows Server 2008 like BitLocker, EFS, and NAP. Finally, it lists some command line tools that can be used to manage roles, features, and tasks.