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+### Creating the domain controller
+- create using roles and groups by server manager
+- on server core use powershell, or use RSAT
+- interestingly you can also set up via a backup of another DC
+
+### Updating the domain controller
+- Upgrade the OS on existing domain controllers that are running Windows Server 2012 R2 or later.
+- Add servers running Windows Server 2022 as domain controllers in a domain that already has domain controllers running earlier Windows Server versions.
+
+### Migrating a domain controller to a new site
+
+The first step of setting up the new location is creating a new site, so all of the computer, user, and other objects may be associated to the new location.
+
+To create a new site in the Active Directory Sites and Services console:
+
+Open the Active Directory Sites and Services console.
+In the console tree, right-click Sites, and then select New Site.
+Name the new site, associate it with the appropriate site link, and then click OK.
+Alternatively, you can create a new site using the PowerShell command as follows.
+
+To assign the newly created site to a subnet:
+
+In the Active Directory Sites and Services console, expand the Sites folder to see the list of sites.
+Right-click Subnets and select New Subnet.
+Enter the subnet address and mask, and then select the site you created from the drop-down list.
+Select OK to associate the subnet with your new site.
+To use PowerShell to map a new site to a subnet, you can use the following command.
+
+To move a domain controller to the new site:
+
+In the Active Directory Sites and Services console, expand the site that currently contains the domain controller you want to move.
+Expand the Servers folder, and then expand the server that represents the domain controller.
+Right-click the domain controller's NTDS Settings object, and then select Move.
+In the Move Server dialog box, select the new site to which you want to move the domain controller, and then select OK.
+Just as you can use PowerShell to create a new site and map it to a subnet, you can use PowerShell to move a domain controller.
+