Linux®:
Ubuntu is a free and open source operating system and Linux distribution based on Debian. Ubuntu is offered in three official editions: Ubuntu Desktop for personal computers, Ubuntu Server for servers and the cloud, and Ubuntu Core for Internet of things devices. New releases of Ubuntu occur every six months, while long-term support releases occur every two years. Support subscriptions for Ubuntu can be purchased for 1 year, 3 years and 5 years.
Red Hat® Enterprise Linux® (RHEL) is an open source operating system designed for edge of network and core data center workloads. RHEL is a subscription-based operating system licensed in 2- and 4-socket versions. Within each socket licensing is an additional licensing option to choose one virtual image, four virtual images or unlimited virtual images to run on top. RHEL can be used in small, medium and large corporate and government organizations without additional licensing and comes in 1, 3- and 5-year subscriptions.
SUSE® Linux Enterprise Server (SLES) is an open source operating system designed to handle workloads running in large data center environments down to single-server environments. SLES is a subscription-based operating system that allows you access to patches, fixes and security updates through their customer portal. SLES subscriptions can be used on 1, 2- and 4-socket servers and can be purchased in 1 year, 3-year and 5 year subscriptions..
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