A domain name is a human-readable address used to identify a specific location on the internet. It allows users to easily access websites without needing to remember complex numerical IP addresses. For example, in the domain name www.example.com, "example" is the unique name, and ".com" indicates the type of organization or purpose. Domain names are organized in a hierarchical structure, with different levels separated by dots. The top-level domain (TLD) is the last part, such as .com, .org, or .net. Registering a domain name typically involves purchasing it from a domain registrar, which manages the allocation of these names.