what is domain

A domain is a string that identifies a realm of administrative autonomy, authority, or control. In the context of the internet, a domain name is a unique, easy-to-remember address used to access websites, such as google.com or facebook.com. Domain names are formed by the rules and procedures of the Domain Name System (DNS), which is an essential component of the internet. The DNS is a decentralized, hierarchical system that translates host names to their associated IP addresses. The domain name space is divided into two main groups of domains: country code top-level domains (ccTLD) and generic top-level domains (gTLD) . Organizations can choose a domain name that corresponds to their name, helping internet users to reach them easily. A domain can also refer to how an organizations network resources are organized.