The new DCOS is essentially a bundle of all of the components Mesosphere has been rolling out — including the Mesos resource management system, the Marathon framework and Chronos job scheduler — as well as third-party applications like the Hadoop file system and YARN.
The DCOS also includes common OS features one would would find in Linux or Windows, like a graphical user interface, command-line interface and a software-development kit.
Read more at GigaOM.
