In layman's interpretation, cloud computing is a concept. Cloud computing is not so much a technology as it is an idea, a shared doctrine on the Web. (including computing power and sharing of data, but not communist, whose property rights are very clear).
This commons has four main points: (1) The network is smooth enough (high productivity), (2) have sufficient resources (capacity and information) of the node (more abundant), (3) nodes can dynamically increase or decrease (as the cloud is variable, it is said that this is the name of the word "cloud" reason), (4) The shared doctrine of the Agreement: Consumers need only to take what they want, to pay, to dens, to sell what they can, to sell knowledge to sell services, but not to sell sovereignty.
Popular explanation Two, cloud computing is an economic model. If the old computing center of the kind of hardware and software equipment, since the development, since the use of the model as a self-sufficient natural economy, then cloud computing is a modern commodity.
Zhuang Zi's sandals are woven from the clothing, the belief is the Tao nature, the practice is natural economy, although it is one of Taoist ancestors, but few "cloud" gas, like the lack of Shenfeng; When businessman politician Bai (bc463-385) in his chain store with sandals and military boots, footwear has a point of "cloud" gas, the comic strip White Guido seems to have a fairy state.
With these popular explanations, look at the following clouds:
Web Mail is a group of clouds. Before the advent of web mail, send and receive emails, start with self-sufficiency in the computer, the operating system, purchase the necessary email software (outlook,foxmail, and so on), and then send and receive and process messages in your own soft and hard environment.
Now, mail consumers can enjoy the cloud services of web mail, no need to take a business trip with the PC + Internet Café + with the appropriate Web browser + login to the appropriate webmail system (Gmail, Sina or Sohu ..., etc.), once the resource provider is selected, with his server, with its CPU, with its software and platform, Also use its storage, unrestrained free to send and receive processing mail;
You can not see its shape, think it is a little misty, a little hazy, like clouds like fog and wind, but whether you go to the ends of the earth, your friends, relatives of the information always fall in its heart.
In this sense, Gmail is a cloud, Sina, Sohu and other web mail system is also a cloud.
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