DNS
Another component that Active Directory and Configuration Manager and other roles are very dependent on is DNS.
DNS is responsible for translating IP addresses to hostnames and is essential in every infrastructure.
When installing Active Directory, you also get the option to install DNS as part of the installation because you need DNS in place to set up Active Directory. By installing DNS as a part of Active Directory, you have the ability to use the replication features of Active Directory to replicate DNS records from one domain controller to another (this is known as Active Directory-Integrated Zones). You also gain some features with this setup when clients try to update their own DNS information (this is known as Secure Dynamic Updates ...
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