Hi,
> Outside Debian there are companies producing operating systems based on
> Debian and providing commercial support for those operating systems,
> probably the biggest example is Ubuntu provided by Canonical:
>
>
https://ubuntu.com/>
https://canonical.com/Yet, if at all possible, you should avoid Ubuntu.
It is, as explained above, a copy of Debian, with little to no added value, but with quite a lot of bugs and issues added on top.
In addition, Canonical is a hostile company working against and exploiting the community, e.g. by persecuting people who criticise Ubuntu online or provide derivatives of Ubuntu themselves. Their most recent hostile move is grabbing security updates from Debian and putting them behind a paywall.
Hence, there's a simple recommendation: If you need your Debian support contractor to have the name Canonical, so much that you are willing to pay ransom for security updates provided by Debian for free, then use Ubuntu. If not, use Debian, and hire a benevolent consultant.
-nik