A Linux server is a variant of the Linux operating system that is designed to handle more intense storage and operational needs of larger organizations and their software. ... Additionally, Linux Servers are generally lighter to run on both physical and cloud servers because they don't require a graphics interface

Windows Server is a brand name for a group of server operating systems released by Microsoft. It includes all Windows operating systems that are branded "Windows Server", but not any other Microsoft product. The first Windows server edition to be released under that brand was Windows Server 2003.