However, one of the most important decisions you'll make is choosing between Linux and Windows Server as the server's operating system (OS). For most people, Linux is the common server choice; Windows Server is for server admins and companies that need Microsoft's services. Server Operating System BasicsNot all web hosting services, or their service tiers, offer a choice between Linux and Windows Server. Compared with Windows Server, Linux handles more functions without issue and requires reboots much less often. Plus, Windows Server is far simpler for green server admins to maintain.