(Something's wrong with Server-447? Just drop it and provision a new one, 5 minutes max.)
We had this before the cloud became popular, and still do. Who isn't running a (nearly) fully virtualized environment these days?
It would be better if you could stick with an older, faster version of iOS and just get security updates like you can with Android.
Except even on Nexus devices you can only get security updates for 3 years. On anything else you're lucky to get them after one year, let alone two. And when you do get them they arrive months late.
Android "security" is an absolute joke.
According to the source, major Android system updates will be provided to Nexus phones and tablets for two full years after the starting operating system's release date, while security patches will be provided for three years from that date.
Meanwhile, iOS 9 was available on the iPhone 4S (from 2011) the day it was released.
Unix is the worst operating system; except for all others. -- Berry Kercheval