Different modes of shared hosting:-
Domain based shared hosting:
It works on the Virtual Private Server (VPS) technology and provides each website with a unique URL, even though they are hosted on a single server. The VPS technology achieves by creating effective partitions in the server and gets them to act as individual servers.
Name based shared hosting:
In name based shared hosting, a websites name appears as a subset of the service providers name. Example of such service providers are geocities, blogspot etc.
Directory based shared hosting:
With respect to directory based shared hosting, the customers website will be mentioned as a directory in the host domain name.
The most important point that comes through with shared hosting is the relative lack of a dedicated IP address. That’s because most of the web security apparatus are applicable on the IP address level. That’s the reason why, dedicated severs are capable of providing a more secure environment; as they guarantee a unique IP address.