简述云计算的发展过程及其特点(简述云计算技术的基本概念)

The five basic characteristics of cloud computing are rapid scalability, measurable services, on-demand self-service, ubiquitous network access, and resource pools. 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.

Basic characteristics of cloud computing

1. Rapid scaling

Scalability refers to the ability to expand resources upward or downward as needed. For users, there is no limit to the number of cloud computing resources, and they can purchase any number of resources according to their needs. This is a major characteristic of cloud computing in the NIST definition.

2. Measurable services

Under measurable services, the cloud computing provider controls and monitors the usage of all aspects of the cloud computing service. This has important implications for billing, access control, resource optimization, capacity planning, and other tasks.

3. On-demand self-service

On-demand services and self-service of cloud computing mean that users can directly use cloud computing services when needed without having to manually interact with service providers. Interaction.

4. Ubiquitous network access

This means that the supplier's resources are available through the Internet and can be accessed through thin clients or rich clients with standard mechanisms.

5. Resource pool

Resource pool allows cloud computing providers to serve users through multi-user sharing mode. Physical and virtual resources can be allocated and reallocated based on user needs. Resource pools are location-independent, and customers generally do not have control or knowledge of the exact location of the resources being provided, but they can specify the location at a high-end extraction level (such as region, country, or data center).

Is it easy to find a job after cloud computing training?

At present, or in the future, the cloud computing industry is very popular. Of course, the premise is that you have enough skills. You can go to the recruitment website Just look at the salary of cloud computing engineers. Almost none of them are less than 10,000. If you work for more than 3 years, the monthly salary can generally reach more than 30,000. Therefore, whether cloud computing is a good job can be determined from the recruitment needs and job salary. To judge.

In recent years, China's cloud computing has been developing rapidly. In addition to the huge market demand, the help of cloud vendors such as Alibaba Cloud has also contributed. With the in-depth scenarioization of vertical industries in the cloud computing industry, the scale of China's cloud computing market will continue to maintain rapid development.

The rapid development of the industry has also given rise to a surge in demand for cloud computing-related talents, highlighting the contradiction between supply and demand. Statistics show that domestic cloud computing talents accounted for less than 5% of Internet jobs in 2018, and in the next five years, my country's cloud computing industry will face a talent demand of up to 1.5 million. Therefore, students who plan to learn cloud computing or are already learning cloud computing not only don’t have to worry about employment issues, but as long as they work hard to learn and master cloud computing expertise, finding a job will not be a problem at all.

With the popularization and development of the Internet, cloud computing technology has become a very important computing method. Traditional computing methods usually require local installation of software and hardware, while cloud computing technology provides these services to users, so that users do not need to worry about software updates and hardware maintenance. In addition, cloud computing technology can also provide powerful and flexible computing capabilities, allowing users to quickly generate and store large amounts of data.
Characteristics of cloud computing technology
The characteristic of cloud computing technology is that it can provide users with scalable computing capabilities. This means that both users and businesses can scale their computing power up or down based on their needs. In addition, cloud computing technology can also optimize the utilization of computing resources and run calculations with higher efficiency after getting rid of the limitations of most computing resources. At the same time, cloud computing technology also provides many easy-to-operate, secure and cost-saving solutions.
Advantages of cloud computing technology
Cloud computing technology can help enterprises, institutions or individuals become more flexible on the basis of efficiency. There is no need to consider hardware configuration. Users can choose the cloud service that suits them and enjoy an operating environment with high reliability, security and easy maintenance. In addition, cloud computing technology can also help enterprises reduce the total cost of ownership. This includes cutting costs, reducing hardware and software costs, and reducing energy costs.
Development Trends of Cloud Computing Technology
As cloud computing technology continues to improve, its application scope continues to expand. Taking artificial intelligence as an example, the development of cloud computing technology has enabled artificial intelligence technology to be better applied to a wider range of fields and scenarios. At the same time, for the cloud computing technology market, more competitors will join the cloud computing market, especially those large companies and large e-commerce companies like Amazon. As competition intensifies, the price of cloud computing services may decline.
Limitations of cloud computing technology
Although cloud computing technology has many advantages, it also has some limitations. First, since cloud computing technology usually requires an Internet connection, application performance may be affected when the environment does not have a stable network connection. Secondly, cloud computing technology must rely on data centers. This means that if a data center failure occurs, the cloud computing service will stop serving, causing great trouble to users. Finally, although cloud computing technology has become very reliable, there are still many issues with security between users and customers. It must be ensured that data is properly protected and encrypted during transmission and storage, otherwise there is a risk of leakage.
Conclusion
Overall, cloud computing technology has many advantages, such as scalability, flexibility, and cost-effectiveness. As time goes by, the development of cloud computing technology will become more complete and solve some of the current problems of cloud computing technology. However, despite this, we also recognize the limitations of cloud computing technology and need to be vigilant when using it.

Cloud computing is a pay-per-use model that provides available, convenient, on-demand network access and configurable computing resource sharing. Pools (resources including networks, servers, storage, applications, services) that can be provisioned quickly with minimal management effort or minimal interaction with service providers.

Cloud computing features: ultra-large scale, virtualization, high reliability, versatility, high scalability, on-demand services, and extremely cheap.

Virtualization concept:

Virtualization is a technology that integrates, manages and reallocates computer hardware resource images through software means. Commonly used means include virtual machine-based virtualization and Container-based virtualization.

Virtualization scenario classification:

Operating system virtualization

Application virtualization

Desktop application virtualization

< p>Storage virtualization

Network virtualization

The difference between cloud computing and virtualization

There is a classic saying to describe the difference between cloud computing and virtualization: Virtualization is a major way for cloud computing to build resource pools. As long as you understand this sentence thoroughly, you will know the relationship between them.

To put it simply, cloud computing is a concept, not a specific technology. Virtualization is a specific technology that refers to products that virtualize hardware resources to achieve isolation, scalability, security, and full utilization of resources.

Currently, cloud computing mostly relies on virtualization. By virtualizing multiple servers, they form a resource pool to achieve joint computing and resource sharing. This is what is now called cloud computing. In fact, before this term was coined, server clusters in the past had already implemented these functions, but they were not as advanced as they are now.