I did some work on AIX once. The thing that I remember is that I was granted some kind of zone/slice or wathever they call for compartmentalization. It didn't even had SSH so I had to use telnet.
The guy I was supposed to prepare the system for could only install Oracle from some crappy java UI wizard so I had to request the sysadmin to install a lot of Linux libraries and programs to enable X11 over SSH.
From memory there was LPAR "Logical Partitions" - which were effectively like a VM.
and there was WPAR "Workload Partitions" - which had a shared OS and were more like a container.
I had some "interesting" experiences getting stuff to work on WPAR's.
IIRC, WPARs could be just for one process, or full OS (but sharing the resources of one AIX instance, I guess that running on an LPAR or directly in the hardware).
I first learned on an AIX box in college; Cygwin/X gave me X11 access and worked perfectly, although I couldn’t tell you whether that used telnet or ssh. Back then I used telnet a lot without any regard for security.
Nicely put (oof!). I believe it also enforced a minimal color depth, which none of our machines could directly support on their own hardware, forcing the use of remote X11 displays.
Yes we first had a world of telnet and networks that allowed anyone who pierced them with a transceiver to be part of it (thicknet). It was a simpler/kinder/less malicious world than todays.
X Windows ran great on AIX before Linux was a thing. IBM was involved with its's inception (Project Athena).
The guy I was supposed to prepare the system for could only install Oracle from some crappy java UI wizard so I had to request the sysadmin to install a lot of Linux libraries and programs to enable X11 over SSH.