Mastering Active Directory - Second Edition

Domain trees

A domain tree is a collection of domains that reflects the organization's structure. My parents and I are bound by a parent-child relationship. It is obviously different from other kinds of relationships. Similarly, domains inside the domain tree have a parent-child relationship. The first domain in the domain tree is called the parent domain. This is also the root domain. All other domains in the domain tree are called the child domains. There will be only one parent domain in a domain tree.

In some documentation, child domains are also called subdomains. When dealing with internet domains, the creation of an additional placeholder, a sub-URL, is sometimes required. For example, rebeladmin.com is the domain name that is used ...