Shulou(Shulou.com)06/03 Report--

What is cloud computing shared by editors today? What are the characteristics of cloud computing? Maybe you are no stranger to cloud computing, or you have never known about cloud computing. But don't worry, today the editor will explain the principles of cloud computing with the simplest description.

In recent years, in the Internet technology industry, the illusory word "cloud" appears more and more frequently, and the professional term "cloud computing" has a stronger sense of existence. However, when it comes to "cloud computing", there are still many people who are confused, so today let's talk about what cloud computing is.

Let's start with the four industrial revolutions:

The first industrial revolution was marked by the invention of the steam engine and characterized by mechanization, and mankind entered the steam age.

The second industrial revolution was marked by the invention of electricity and internal combustion engine and characterized by electrification. Mankind has since entered the electrical age.

The third industrial revolution was marked by the invention of the computer and characterized by informationization. Mankind has entered the information age since then.

The fourth ongoing industrial revolution is marked by industrial intelligence, Internet industrialization, comprehensive cloud, and the application of big data, characterized by intelligence and automation, and mankind will enter the intelligent era. Cloud computing is the concept that came into being in this round of industrial revolution.

I. definition

First of all, the definition of cloud computing is given: providing dynamically scalable and cheap computing services on demand through the network. It is a kind of service related to information technology, software and Internet.

Cloud computing is a pay-per-use model, which provides available, convenient, on-demand network access to a configurable pool of computer resources (including networks, servers, storage, applications, services). These resources can be provided quickly.

For example, in the past, a company had to build an information system to support its business, build its own computer room, buy servers, build systems, develop all kinds of applications, and set up special personnel to maintain it. First, the one-time investment cost of this traditional information system is very high; second, when the company's business is expanding, it is difficult to expand rapidly; third, the use of software and hardware resources is inefficient; fourth, it is troublesome to maintain at ordinary times.

Then the emergence of cloud computing can well solve the above problems. Cloud computing first provides a business model of renting on demand. Customers need to build information systems. They only need to rent all the computing resources they want from cloud computing providers (such as Huawei Cloud) through the Internet, and these resources can be accurately billed. For example, cloud computing is like a waterworks, where enterprises no longer have to drill their own wells to drink water, but can directly buy water from the waterworks by connecting pipes.

In a word, cloud computing is not a brand-new network technology, but a new concept of network application. The core concept of cloud computing is to provide fast and secure cloud computing services and data storage on the website with the Internet as the center, so that everyone who uses the Internet can use the huge computing resources and data centers on the network.

2. Characteristics

From a business model perspective, cloud computing has three characteristics:

First, services can be rented, and users can rent the services they need through the network.

Second, the service can be measured in minutes or seconds

Third, this model is cost-effective and cost-effective than the traditional model.

From a technical point of view, cloud computing has two supporting technologies:

One is virtualization technology, including server virtualization, storage virtualization and network virtualization. For example, in the past, no matter how much a person ate, there was always a bowl of rice in front of him, and some people did not have enough to eat. Now, after virtualization, all meals are unified, giving more to those who can eat and less to those who cannot. In this way, the utilization rate of software and hardware resources can be maximized.

The other is parallel computing technology. In the past, it took a long time for a task to be in a server, but now we can decompose the computing task and change it into multiple calculations to improve the computing speed.

III. Types

1. Cloud computing can be divided into three categories according to service types:

1), Infrastructure as a Service IaaS (Infrastructure as a service)

2), platform as a Service PaaS (platform as a service)

3), Software as a Service SaaS (software as a service)

We can compare the three types of cloud computing services by building our own houses and living in our own homes.

The first is Infrastructure as a Service (IaaS). Before the company had to build an information system, where did the infrastructure come from? You need to build your own computer room, server, network and supporting facilities. Just like building your own house, you need to buy your own land, buy materials, design the structure of the house, and build the house. Now the infrastructure as a service tells you that you don't have to build your own house. I have a ready-made one, and you can just rent it.

The second is the platform as a service PaaS, before the company built its own information system, but also to build their own operating system, configuration environment. Just like you have to decorate the house yourself after you have built the house, now the platform as a service tells you that you do not have to decorate the house by yourself. I can provide decoration services, and you can buy it directly.

Finally, the software as a service SaaS, before the company in the operating system, environment configuration, but also to develop their own application software. For example, after the hard installation of your house is completed, you have to be equipped with soft equipment, equipped with leisure and entertainment facilities, sports and fitness facilities, and so on. Now Software as a Service tells you that these application facilities are readily available, and you can also rent them directly.

2. According to the deployment form, it can be divided into three categories: public cloud, private cloud and hybrid cloud.

Public cloud is for multiple customers to share the computing resources provided by a service provider, and customers obtain these resources by leasing according to their actual needs.

Private cloud means that computing resources are dedicated and controlled by an enterprise. Private cloud is generally deployed in the data center of the enterprise and managed by internal personnel of the enterprise. Large companies with strong strength tend to build their own private cloud.

Then the hybrid cloud is the mixture of the public cloud and the private cloud. The strategy of the hybrid cloud is to maintain those relatively private operations in the private cloud part, and deploy relatively open computing in the public cloud part. The hybrid cloud can take into account the advantages of both clouds.

III. Advantages of cloud computing

1. More secure

Avoid server paralysis and data loss caused by virus intrusion.

To avoid DDOS attacks, the server was forced to shut down.

Avoid the host traffic exceeding the standard and the server inaccessible due to the explosive increase in the number of visits. Avoid the risk of server damage due to the threat of the surrounding natural environment.

Avoid affecting the normal use of the software due to power outage.

Avoid damage to the hardware server, resulting in data loss.

2. Save more money

Save the electricity cost of the local server, about 3000 yuan / year.

Save the purchase cost of hardware server, and save thousands to tens of thousands of yuan every year.

Save broadband fees, hosting fees, domain name resolution (IP wizard) and other fees.

Save the labor cost of special maintenance.

3. More convenient

Save a series of work of local server installation and deployment.

Save the professional server operation and maintenance work.

Eliminate the problems of software version number upgrade, data migration, cross-version upgrade and so on.

Save because the server technician does not know the software. It leads to the problem that the software problem can not be solved.

Save the problem of poor software after-sales service experience, time-consuming and untimely caused by traffic, time, efficiency and so on.

Save the negative emotions brought to customers because they can't solve their problems.

IV. Trends in Cloud Computing

The future of the information age: cloud computing, big data, artificial intelligence, Internet of things, quantum computing, quantum communication.

At this point, everyone should have a preliminary understanding of cloud computing.

What? You say you still don't understand, so let me finally make a big move to make you understand more deeply:

You have married a wife, which is the IT architecture of traditional enterprises.

You don't think one wife is enough, which is the dilemma of traditional enterprise IT architecture.

So you take so many wives that you form a harem, which is the private cloud.

If you are poor and have no money to marry, you choose to go to the bath center to solve your personal problems. This is called public cloud.

If you are rich and like to go to the bath center after having a group of wives, this is called hybrid cloud

A bath center that only provides places and requires you to find your own technician is called Infrastructure as a Service (IaaS).

A bath center that provides both places and technicians is called platform as a Service (PaaS).

Then the bath center that can be made into a Guan service is called Software as a Service (SaaS).

We've already talked about it. I think you understand what cloud computing is.

As a senior professional cloud computing service provider and cloud security service provider in the industry, it is committed to providing cloud host rental services such as "cloud servers, bare metal servers, high defense servers, Hong Kong servers, American servers" and comprehensive solutions on cloud for the vast number of Internet enterprise users and enterprise users in traditional industries. It has the characteristics and advantages of "security and stability, easy to use, high service availability, high performance-to-price ratio". It is specially customized for enterprises on the cloud, and can meet the needs of rich and diversified application scenarios.

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