The definitive source of information would be .. Red Hat itself.
I went to http://www.redhat.com
, typed "licensing" in their Search
box, and found all kinds of very interesting stuff.
The thing to remember about any
software configuration is that parts
of it may be free while other parts are not. And, instead of popping into a knee-jerk "yuck!"
reaction at the thought of having to pay for something software, what you want to do instead is to consider what you get
for what you are being asked to pay for. I'm not telling you what to decide, only that you should methodically look.
As an example, it's clear that Red Hat is courting the corporate client, who is probably running a very large number of systems and may, on some of those systems, have intensive performance requirements. Do you
meet one of their profiles? If so, you might decide that what they're selling
is, for you, an excellent buy. Or you may decide that it is not.