Dedicated server hosting may not be as cheap as shared hosting, but it is accompanied with a whole host of benefits that makes up for that. It is often well worth the additional cost of choosing a dedicated server, especially if you have multiple sites or need extra security levels. Shared hosting certainly has its place - it is perfect for those whose website is not central to their business and who rarely make any changes to it, but anyone who is more technical or who relies more on their site or sites needs something more. That is what a dedicated server can provide.
Renting a dedicated server is as flexible and controllable as it is possible to get for a webmaster without owning your own hardware. No one has access apart from you which greatly reduces the risk of security breaches and server hacking. The server is a physical piece of equipment, a computer that hosts your websites and makes them