Ubuntu Server brings economic and technical scalability to your datacentre, public or private. Whether you want to deploy an OpenStack cloud, a Hadoop cluster or a 50,000-node render farm, Ubuntu Server delivers the best value scale-out performance available. Developed by Canonical Ltd
License: Open Source
Ubuntu Server is a robust, open-source operating system designed for server environments, offering strong security and customization, while Windows 7 is a user-friendly desktop operating system that excels in compatibility and multimedia but is less suited for server tasks.