What are the five major characteristics of cloud computing?

The five major characteristics of cloud computing are: 1. Elastic service; the scale of the service can be quickly scaled to automatically adapt to dynamic changes in business loads. 2. Resource pooling; resources are managed uniformly in a shared resource pool. 3. On-demand services. 4. The service can be billed. 5. Ubiquitous access; users can use various terminal devices to access cloud computing services through the Internet anytime and anywhere.

Cloud computing is a type of distributed computing, which refers to the decomposition of huge data computing processing programs into countless data through the network "cloud" A small program is then processed and analyzed through a system composed of multiple servers to obtain the results and return them to the user. In the early days of cloud computing, to put it simply, it was simple distributed computing, solving task distribution and merging calculation results. Therefore, cloud computing is also called grid computing. Through this technology, tens of thousands of data can be processed in a very short time (a few seconds), thereby achieving powerful network services.

Cloud computing uses computer clusters to form data centers and delivers them to users in the form of services, allowing users to purchase cloud computing resources on demand just like water and electricity. From this perspective, the goals of cloud computing and grid computing are very similar.

But traditional distributed computing such as cloud computing and grid computing also have obvious differences:

• First of all, cloud computing is elastic, that is, cloud computing can be based on The workload size dynamically allocates resources, and applications deployed on cloud computing platforms need to adapt to changes in resources and respond according to changes;

• Secondly, compared with the emphasis on heterogeneous resources Shared grid computing and cloud computing emphasize the sharing of large-scale resource pools, improve resource reuse through sharing, and use economies of scale to reduce operating costs;

• Finally, cloud computing requires Considering economic costs, the design of hardware equipment and software platforms no longer blindly pursues high performance, but must comprehensively consider factors such as cost, availability, and reliability.

Based on the above comparison and combined with the application background of cloud computing, the characteristics of cloud computing can be summarized as follows.

1) Flexible service. The scale of services can be quickly scaled to automatically adapt to dynamic changes in business loads. The resources used by users are consistent with business needs, avoiding service quality degradation or resource waste caused by server performance overload or redundancy.

2) Resource pooling. Resources are managed uniformly in a shared resource pool. Using virtualization technology, resources are shared with different users, and resource placement, management, and allocation strategies are transparent to users.

3) On-demand service. Provide users with resources such as applications, data storage, and infrastructure in the form of services, and automatically allocate resources according to user needs without the need for system administrator intervention.

4) The service is billable. Monitor users' resource usage and bill services based on resource usage.

5) Ubiquitous access. Users can use various terminal devices (such as PCs, laptops, smartphones, etc.) to access cloud computing services through the Internet anytime and anywhere.

It is precisely because cloud computing has the above five characteristics that users use cloud computing to store personal emails, store photos, purchase music from cloud computing service providers, store profiles and information, and interact with social networking sites ( For example, Facebook, LinkedIn, MySpace) interact, find driving and walking directions through cloud computing, develop websites, and interact with other users in cloud computing. It makes it easier and faster for users to handle life, work and other matters. This is also an important factor why cloud computing can spread rapidly and become popular in a short period of time.

The above is the detailed content of What are the five major characteristics of cloud computing?. For more information, please follow other related articles on the PHP Chinese website!