Cloud computing is and what is not?

Generally speaking, people recognized cloud computing as a style of computing that allows delivery via Internet in the form of "service" to external users flexible, scalable IT capabilities. There are three key words: scalable, services and Internet, so say the cloud is to deploy and deliver applications over the Internet, and can be expanded demand.
In short, cloud computing is not the end-user to buy something. In fact, end users should not ignore the concerns whether the application is the use of cloud computing approach to delivery. Cloud computing is the enterprise in order to reduce infrastructure costs and improve efficiency, solve the purpose of capacity / scalability issues, and a new application architecture used. This little test can help determine whether your company has deployed a true cloud computing:
L whether the end user can set up their own infrastructure or application services without the help of IT staff?
l and other servers, storage and network resources as a resource pool or isolated entity to consider?
l whether the elasticity of services and applications? You can automatically expand and subscription on demand?
l can automatically track the use of infrastructure or applications? Spent much computing power? Whether individually track each user or department?
Know what cloud computing is, after emphasizing cloud computing is not what is important.
Cloud computing is not server virtualization. The existence of these two architectures are essentially different, technically, operation or support cloud computing may not be required server virtualization. Cloud computing does not lock Supplier: cloud should be open, it can work together according to customer demand with any type of infrastructure that can support different types of virtual devices. The cloud is a new architecture, which is based on a more flexible, efficient and economical way to deliver IT services to a new approach.