It is often assumed the branding ES, AS, and WS stand for "Entry-level Server", "Advanced Server" and "Work Station", respectively.The reason for this is that the ES product is indeed the company's base enterprise server product, while AS is the more advanced product.
Web support based on number of customer contacts can be purchased separately.
RHEL trees are forked off the Fedora repository, and released after a substantial stabilization and quality assurance effort.
For example, RHEL 6 was forked from Fedora at the end of 2009 (approximately at the time of the Fedora 12 release) and released more or less together with Fedora 14.
Operating System: RHEL 7.0 Note: In this method, whole operating system will be upgraded to the latest minor versions.
Red Hat Enterprise Linux (RHEL) is a Linux distribution developed by Red Hat and targeted toward the commercial market.