Our public client, Pantheon, has been open source for use by Ethereum application developers since October 2018.
We started with a public chain client to improve code maintainability, giving us direct access to innovation from public Ethereum, like sharding and plasma.
Public Pantheon will also have some enterprise features such as consensus algorithms.
Private, permissioned versions of Pantheon will be released some months after, using the requirements outlined in the Enterprise Ethereum Alliance spec as a basis for its design.
For instructions for deploying from public clouds, Docker, or other platforms, please review our documentation.