I have worked in the Software business for a lot of years; and it used to be simple in the past. You would find a hardware vendor, buy a server, put your software on it and ship out to a new customer. The customer would put it into a closet, which always got too hot, along with some tape cartridges. The customer had a maintenance contract with a hardware vendor to fix the hardware when it broke. Then there was the lucky sole who would get to wait after the business closed to run the backups of the data to tapes, so they could be taken off-site. This usually meant they took the tapes home with them for “secure” storage.