Cloud computing is the ability to have all your data, programs, and access to printers and devices accessible through a server. It gets its name from the fact that a cloud is visible to more than one person at a time. It allows you to have everything all in one place without having to go back and forth.
Four types of Cloud Computing Service:-SaaS (Software as a service) - Is the business model of software license, which involves the development and support of the software vendor. Customers also have the opportunity of paid use of it, usually through the internet.PaaS (Platform as a Service) - An integrated platform for the development, deployment, testing and support of web-applications. Presented as a service on the basis of the concept of cloud hosting service.IaaS (Infrastructure as a Service) - A computer infrastructure, typically presented in the form of visualization. Is a service within the concept of cloud hosting.XaaS(Anything as a Service) - This is a recent addition to cloud computing services. Under XaaS, X is regarded as 'anything' which could be provided as a service using cloud computing. This is also known as 'Everything-as-a-Service'. Generally, XaaS providers offer hybrid cloud services products.
Honestly, I'm not entirely sure what it is that you mean by cloud computing service providers. I do however, know that companies such as Apple and Amazon use cloud computing for their websites.
SaaS is an acronym for Software as a Service, and is really just an aspect of cloud computing. It's a hard-to-grasp concept for those who are not technologically inclined. There is not much difference between the two, and it seems that "cloud" computing is simply a catchy new term to interest the buyer.
PAAS
There are many images of cloud computing on PhotoBucket. However, because cloud computing is a service provided, and not an object it may be difficult to find images.
You can find cloud computing for free on the internet. Usually the amount of money you pay for cloud computing depends on your usage of the service you would like to get.
A project could be a computer technician renewing, sending and/or updating software. Cloud computing is the idea that computing as a service not a product.
The concept of cloud computing (in English, cloud computing) refers to the use of memory and storage and computation capabilities of computers and shared servers and networked through the Internet, following the principle of grid computing.
Four types of Cloud Computing Service:-SaaS (Software as a service) - Is the business model of software license, which involves the development and support of the software vendor. Customers also have the opportunity of paid use of it, usually through the internet.PaaS (Platform as a Service) - An integrated platform for the development, deployment, testing and support of web-applications. Presented as a service on the basis of the concept of cloud hosting service.IaaS (Infrastructure as a Service) - A computer infrastructure, typically presented in the form of visualization. Is a service within the concept of cloud hosting.XaaS(Anything as a Service) - This is a recent addition to cloud computing services. Under XaaS, X is regarded as 'anything' which could be provided as a service using cloud computing. This is also known as 'Everything-as-a-Service'. Generally, XaaS providers offer hybrid cloud services products.
Have you been wondering if there is a difference between cloud computing and SAAS, which stands for Software-as-a-Service? There definitely is a difference between the two terms. Cloud computing refers to the larger concept of using the Internet to access the network and services. Cloud computing is extremely scalable. SAAS differs in that it is software that is managed remotely by a provider on a subscription basis. SAAS is like cloud computing though because it is massively scalable.
And example of centralised computing is IMB and Google's cloud computing service.
The history of cloud computing isn't exactly clear, however, an article run in Computer Weekly gives you a pretty good background. Another resource is Cloudcomputing.sys-con.com. This site has all the information you are looking for and more.