Domain names are used to identify one or more IP addresses.

For example, the domain name microsoft.com represents about a dozen IP addresses.

Domain names are used in URLs to identify particular Web pages.

For example, in the URL https://www.rak4cloud.com/home, the domain name is rak4cloud.com.

Every domain name has a suffix that indicates which top level domain (TLD) it belongs to.

There are only a limited number of such domains.

For example:
gov - Government agencies
edu - Educational institutions
org - Organizations (nonprofit)
mil - Military
com - commercial business
net - Network organizations
ca - Canada
th - Thailand
ae - United Arab Emirates

Because the Internet is based on IP addresses, not domain names, every Web server requires a Domain Name System (DNS) server to translate domain names into IP addresses.