What type of hosting service allows multiple entities to share portions of the same domain name?

The correct answer is that a shared domain hosting service allows multiple entities to share portions of the same domain name. This type of hosting is designed so that different users can host their websites on the same server while using a common domain name structure. For example, a primary domain can host several subdomains or directories that belong to different users or organizations, making it an efficient and cost-effective solution for smaller entities or individuals who want to establish their web presence without incurring the higher costs associated with having a dedicated domain or server.

In contrast, dedicated hosting refers to a single server allocated to one user, which is ideal for larger businesses needing maximum control and resources, but does not share portions of a domain name across multiple entities. Virtual domain services typically refer to the ability to host multiple domains or websites on a single server, but they do not specifically highlight the sharing of a domain name as part of the arrangement. Cloud hosting involves using a network of remote servers hosted on the internet to store and manage data, allowing for scalability and flexible resource allocation, but again, does not emphasize sharing a single domain name among multiple entities like a shared domain does.