Interestingly, the lead architect of the VMS operating system, Dave Cutler was headhunted by Microsoft in the 80s to work on their new operating system - Window

Interestingly, the lead architect of the VMS operating system, Dave Cutler was headhunted by Microsoft in the 80s to work on their new operating system - Windows NT. There are a LOT of similarities between VMS and NT, under the hood. From memory, the process priority and scheduling systems are (or originally were) identical.