Cloud hosting services cater hosting for websites on virtual servers which drag their computing resource from large networks of physical web servers. It provide the utility computing model in which resources are available as service rather than a product.In Cloud your website is not hosted on a single serve it works on the principle of multiple cluster network as the website is hosted on the multiple server
cloud hosting has divided into three categories as SaaS (Software As a Service ), PaaS ( Platform as a service ) and Iaas ( Infrastructure as a service ). In software as a service software, The software installed on cloud and from that cloud you can access this software anywhere in the world there no need to install it on every machine. Whereas in platform as a service one will get the platform for development of software. On the Other hand Infrastructure as a service is used to store and host the data which can be accessed from anywhere.
The main purpose of cloud hosting to give the enterprise customer the Virtual Data Centre
This network of serve in the cloud is used to host all the business of Information Technology operation Including its website


Benefits and features offered by cloud hosting


Reliability;
Instead of being hosted on a single physical server the website is hosted on virtual partition which carried out its resources, In Such a disk space from an extensive network of physical servers If one server goes down it will not affect the availability of a website it can access from the other server so it increases the availability. Many cloud could even survive when whole data centre is down the reason, It is also hosted on the multiple data centre.

Physical Security; the underlying physical servers are still housed within data centers and so benefit from the security measures that those facilities implement to prevent people accessing or disrupting them on-site

Scalability and Flexibility;The Resource is accessible in real time on demand and not restricted to the physical pressure or capacity of one server. If client site wants extra resources for implementation and new functionality the resources is accessed seamlessly even if using a private cloud model the resources is delivered from the public cloud

Utility style costing;
The client will actually pay what they have used It is highly scalable so it can adjust with the load and traffic on the website