Question "Device Owner" vs "Power User" groups

Oct 29, 2015
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What is the difference between the "Device Owner" group and the "Power User"?
I can find info on the Power User group and that it is essentially a limited access Administrator group, so far I haven't been able to find much on what the abilities/restrictions are for the device owner group.
I'm going to continue looking in the meantime but figure I would post this question.
I have a domain user that is going to be traveling quite often and needs permission to install programs without needing the admin password.
Its been a few years since I've had to set one of these up.