This document provides an overview of Windows Server 2008, including its editions, core technologies, roles, and new features. It describes the function of a server operating system and lists common server roles like file/print sharing, web server, and Active Directory. The editions of Windows Server 2008 - Standard, Enterprise, and Datacenter - are explained in terms of licensing and hardware support. Core technologies like NTFS, Active Directory, MMC, disk management, and networking concepts are introduced. New features in Windows Server 2008 such as Server Manager, Server Core, Hyper-V, storage improvements, and new Active Directory roles are also highlighted.