[CentOS] where is samba?

Sun Jul 23 17:56:48 UTC 2017
mad.scientist.at.large at tutanota.com <mad.scientist.at.large at tutanota.com>

Can I ask where people are downloading samba from?  I followed the instructions in the centos wiki but it's hard to tell what to do next on the German site.  It was easy before but totally murky now (at least to this wetware).  a link or two or clearer/more complete instructions  would be greatly appreciated.