Fedora Editions are curated sets of packages, guidelines and configuration, and artifacts built from those pieces, that address a specific, targeted use-case. The Editions are the primary Fedora outputs that most Fedora users are encouraged to use and directed towards through the download site.
Fedora Editions grew out of the Fedora.next project in 2013. The initial editions, at that time referred to as 'products', were Workstation, Server, and Cloud, and this split was initially implemented in the Fedora 21 release. An objective covered further development and refinement of the concept over the next few years, including the replacement of Cloud by Atomic, and settling on the name 'editions'.
Each Edition is led by a Working Group. These working groups have overall responsibility for setting the direction of the edition, and guiding its development.