云计算通俗定义(云计算是什么通俗举例)

Definition of cloud computing: Cloud computing is a type of distributed computing, which refers to the decomposition of huge data computing processing programs into countless small ones through the network "cloud" Programs are then processed and analyzed through a system composed of multiple servers to obtain results and return them to the user.

Cloud computing characteristics:

1. Large-scale and distributed

“Cloud” generally has a considerable scale. Some well-known cloud providers such as Google Cloud Computing, Amazon, IBM, Microsoft, Alibaba, etc. also have millions of server scales. The "cloud" built on these distributed servers can provide users with unprecedented computing capabilities.

2. Virtualization

Cloud computing will all use virtualization technology. Users do not need to pay attention to specific hardware entities. They only need to choose a cloud service provider, register an account, and log in. Go to their cloud console to purchase and configure the services you need (such as cloud servers, cloud storage, CDN, etc.), and then make some simple configurations for your application, and then you can make your application serve external services. , which is much simpler and more convenient than deploying a set of applications in the traditional enterprise data center. And you can control your resources through your PC or mobile device anytime, anywhere, just like the cloud service provider provides an IDC (Internet Data Center) for every user.

　3. High availability and scalability

Those well-known cloud computing providers generally adopt measures such as multiple copies of data, fault tolerance, and isomorphic interchangeability of computing nodes to ensure high service quality. reliability. Applications based on cloud services can continue to provide external services (7*24 hours). In addition, the scale of the "cloud" can be dynamically expanded to meet the needs of the growth of application and user scale.

4. On-demand services are more economical

Users can purchase services according to their own needs, and can even be billed accurately based on usage. This can greatly save IT costs, and the overall utilization of resources will also be significantly improved.

　5. Security

Network security has become a problem that all enterprises or individual entrepreneurs must face. It is difficult for enterprise IT teams or individuals to deal with malicious attacks from the network, and Using cloud services can effectively reduce security risks with the help of a more professional security team.

"Cloud computing" means: the increase, usage and interaction patterns of Internet-based related services, usually involving the provision of dynamically scalable and often virtualized resources over the Internet.

In layman’s terms, cloud computing is computing through a large number of computing resources in the cloud. For example, users send instructions through their own computers to service providers that provide cloud computing, and through a large number of servers provided by the service providers, " Nuclear Explosion" is calculated and the results are returned to the user.

Extended information:

The evolution of cloud computing:

Power plant model stage: The power plant model is like taking advantage of the scale of the power plant The effect is to lower the price of electricity and make it more convenient for users to use without the need to maintain or purchase any power generation equipment.

Utility computing stage: In 1961, McKinsey, the father of artificial intelligence, proposed the concept of "utility computing" at a conference. The core of it was based on the power plant model, with the specific goal of integrating servers and storage scattered throughout the country. Systems and applications are shared among multiple users, allowing users to use computer resources like plugging a lightbulb into a lamp socket and pay according to the amount they use.

Grid computing stage: Grid computing studies how to divide a problem that requires huge computing power into many small parts, and then allocate these parts to many low-performance computers for processing. Finally, Combine the results of these calculations to solve big problems.

Cloud computing stage: The core of cloud computing is very similar to utility computing and grid computing. It is also hoped that IT technology can be as convenient and low-cost as using electricity.

Reference source: Baidu Encyclopedia-Cloud Computing