Often servers are in a server room that is not convenient to get to. If you use PowerShell to administer your network and want to use PowerShell from your workstation to administer Active Directory (AD) then you need to install the Remote Administration tools on your workstation. The procedure is fairly straight forward.
With Windows 7 or Windows 8 you need to download the Remote Server Administration Toolkit. Then for Windows 7 and Windows 10 you go to Control Panel to turn on that Windows feature. With Windows 8 installing the RSAT kit you also turn on the services automatically. Then you simply have to import the AD module in your PowerShell session and you have access to all the AD cmdlets, and the PSProvider for AD.
I am truly a geeks geek. I have worked in computers for over three decades. I have worked on mainframes, Unix systems, Linux before almost anyone knew what it was, and many other systems. I love computers, and love making them do things people think is impossible.