The support system of Red Hat Enterprise Linux (RHEL) is better than canonical, at least on the server side. The user side I do prefer Ubuntu as it is where I cut my teeth with linux
It is a very similar OS but it can not be handle the same way as Red Hat Enterprise Linux (RHEL), we need to check more according the OS the support and sometimes can be mistakes as Red Hat Enterprise Linux (RHEL) trouble shoot but it Will not work as the oficial Red Hat support
Red Hat Enterprise Linux offers us the flexibility to choose our flavor of virtualization. As our forecasts are inputted, we can either use OpenStack or OpenShift to suit our needs.
Red Hat Enterprise Linux stands above Windows and Ubuntu, in my opinion, because of streamlined features, excellent support, and plethora of available documentation and user created tools.
Our use of RHEL has been orthogonal to our exploration of OpenShift and Kubernetes. We have experimented with using minimal footprint RHEL instances inside containers to minimize the total size of our containers.