1. Extra large scale
"Cloud" has a considerable scale. Google Cloud Computing already has more than 1 million servers, and "Cloud" such as Amazon, IBM, Microsoft, Yahoo, etc. all have hundreds of thousands of servers. Enterprise private clouds generally have hundreds or thousands of servers. "Cloud" can give users unprecedented computing power.
2. Virtualization
Cloud computing supports users to obtain application services from any location and using various terminals. The requested resource comes from the "cloud", not a fixed tangible entity. The application runs somewhere in the "cloud", but in fact users do not need to understand or worry about the specific location of the application running. Just a laptop or a mobile phone can achieve everything we need through network services, even tasks like supercomputing.
3. High reliability
"Cloud" uses measures such as multiple replicas of data fault tolerance, isomorphic and interchangeable computing nodes to ensure high reliability of services, and using cloud computing is more reliable than using local computers.
4. Generality
Cloud computing is not targeted at specific applications. With the support of "cloud", it can create ever-changing applications, and the same "cloud" can support the operation of different applications at the same time.
5. High scalability
The scale of "cloud" can be dynamically scaled to meet the needs of growth in application and user scale.
6. On-demand service
"Cloud" is a huge pool of resources that you can buy on demand; clouds can be billed like tap water, electricity, and gas.
7. Extremely cheap
Since the special fault tolerance measures of "cloud" can use extremely cheap nodes to form the cloud, the automated centralized management of "cloud" allows a large number of enterprises to avoid the increasing cost of data center management. The universality of "cloud" greatly improves the utilization rate of resources compared with traditional systems. Therefore, users can fully enjoy the low-cost advantages of "cloud". Often, they can complete tasks that previously required tens of thousands of dollars and months to complete in just a few hundred dollars or days.
8. Potential dangers
In addition to providing computing services, cloud computing services must also provide storage services. However, cloud computing services are currently monopolized in the hands of private institutions (enterprises), and they are only able to provide commercial credit. Government agencies and commercial institutions (especially commercial institutions like banks that hold sensitive data) should be sufficiently vigilant about choosing cloud computing services.
Once commercial users use cloud computing services provided by private institutions on a large scale, no matter how strong their technological advantages are, these private institutions will inevitably be allowed to control the entire society with the importance of "data (information). For the information society, "information" is crucial. On the other hand, the data in cloud computing is kept confidential to other users other than the data owner, but there is indeed no secret to commercial organizations that provide cloud computing.
All these potential dangers are an important prerequisite that commercial institutions and government agencies have to consider when choosing cloud computing services, especially cloud computing services provided by foreign institutions.
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