Some might be surprised how many systems are still running on AS400s. IBM still makes and maintains IBMi, the modern iteration. My last company wrote our flagship product for these machines, all green screen. Our customers would sometimes move to our GUI product and jump right back to the prompt menus. Hey, if you gotta move fast and have a bulletproof system, text menus are the only way to fly!

By my god, the skill set for running and programming those beasts touches on almost nothing I've learned in 30+ years of IT work. Wish I had got experience in that part of the company, seen some solid job posts for that sorta tech.

If it serves their needs then more power to them. Tech companies today more than ever make sure you keep buying.

If not for DX10 and above not even existing on it, afaik, I'd still be using XP. That was the best iteration until they forcibly made you have to upgrade if you played games (especially if you wanted to play Halo on PC).

People keep saying to keep these XP machines off the internet. I seriously doubt there's much threat, especially for even older OS's like 98 and 95. It's the very devil just trying to browse with them, nothing much out there is going to be able to attack them. Security through obscurity indeed!

In any case, we're no longer in the Wild West days when people had machines hooked directly to the internet and a firewall was a third-party addon. LOL, ZoneAlarm anyone!

We all have a basic firewall built into our routers so unless you deliberately expose services you're fairly bulletproof to scanners. I remember scanning for Win2000 machines in blocks of IPs, long after it was defunct. Plenty were out there!