Think about a serviced apartment, you can use the furniture and appliances and if there was ever a problem or you needed something else, you would simply request that from the owner. The same concept applies to hosting a company’s IT infrastructure and equipment needs. Usually, dedicated server hosting service will install, maintain and repair your equipment for you so that you can concentrate on your core business.
For example…
Rackspace is a business in the server hosting domain. They provide dedicated hosting on various types of servers including web, database and application. They also can look after and manage enterprise security and provide migration services. Furthermore, they can even manage web services you rely on such as those provided by Amazon.