A background of Cloud Hosting

Generally cloud hosting is an operation on several connected services; it enhances the hosting services like dedicated/shared hosting. It is the most technically advanced and yet affordable way to serve and expand your business.
Cloud computing is the concept of providing resources as a services over the Internet.
The concept involves three primarily services and it is offer by the major providers such as IBM, Goggle, Micro soft and Yahoo.
The provider of cloud hosting/computing is responsible for the security, maintenance and support of the cloud.
The three building blocks of cloud computing is SAAS (Software as a service), PAAS (Platform as a service) and IAAS (Infrastructure as a Service). All of these allow users to run application and store data online. Each offers a different level of user flexibility and control. SAAS allows user to run existing online applications. The PAAS allows users to create their own cloud applications using supplier specific tools and languages. IAAS allows users to run any applications they please on cloud hardware of their own choice.
SAAS Pros and Cons
i) Free or paid via subscription
ii) Accessible from any computer
iii) Facilitates collaborative working
iv) Generic application not always suitable for business use.
PAAS Pros and Cons
i) Rapid development at low-cost
ii) Private or public deployment
iii) Limits developers to provider languages and tools
iv) Risk of vendor lock-in.

The advantages of a cloud hosting/computing are that a subscriber or user could avoid capital expenditures.
This cost includes Hardware and software services used and you can save storage space because only a single copy of any data can be shared.
Cloud hosting service shares the infrastructure and service cost with many other users at the same cloud.