Is it better to install Samba 4 on CentOS 7 from source or yum install?

Question

Samba

I decided to try to install AD on Samba 4 on CentOS 7.
It seems obvious - yum install samba
But - no, here they warn that it's better to install from sources, sernet, but not from RedHat/CentOS packages.
Sernet has now become Sernet+ and asks for a subscription (like at least 250EUR/year), which is a bit expensive.
What, does the configure - make - make install option really remain? I don't mind, but perhaps it's better to create an rpm from at least the same sources? I came across make install about 6 years ago, everything seems to be installed normally from packages now. But Samba made me think.

Answer 1

Take the spec and build your rpm file. Then install as usual.
If desired, deploy to other servers.

Answer 2

Stupid question: is the spec file taken "from somewhere" or is it supposed to be created? If "take", then I for samba something will not think where to search.