Simon Anderson, CEO of Dreamhost, noted that his company has been using Linux since the company was founded in 1997. Dreamhost originally used the Debian Linux distribution but more recently has started to shift toward Ubuntu Linux.
While Dreamhost uses Ubuntu, they currently don’t have a commercial agreement with Canonical, the lead commercial sponsor of Ubuntu. There is, however, a relationship between Ubuntu founder Mark Shuttleworth and Dreamhost, as Shuttleworth is an investor in Inktank, a company that Dreamhost helped to fund in an effort to support the open source Ceph filesystem.
Anderson expects that in the future on the Dreamhost side there will be more of a commercial relationship with Canonical.