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What is cloud computing? How can the cloud do the calculation? GO GO GO! Mr. document starts today. Get in the car!

I wonder if readers, like the document, are full of garbled codes when they see this picture-"Cloud computing &% ¥# ¥everywhere *% ¥…% share &% # ¥(&").

Walking into cloud computing today, the document brings 5W analysis, by answering five questions, so that every reader can understand cloud computing and walk on the forefront of the information age.

Why is a W straightforward understanding of "cloud" computing WHY called cloud computing? Clouds, formed by the rising of water in case of heat, can not only bring shade to us by movement, but also bring rain when a large number of them gather together.

The "cloud" of cloud computing is actually a huge resource pool, which realizes the mobility of resources and the mass storage of data.

Then "computing" is much simpler and straightforward. Cloud computing provides computing power and information services for a variety of application systems.

3 W understand the details of cloud computing WHAT

What are cloud computing services? The various types of services in cloud computing can be seen from its basic features:

On-demand self-service: users buy on demand, buy as much as they need, and can be cancelled at any time when they don't need it.

Extensive network access services: users can access and use services anywhere using a variety of terminals.

Resource pool service: resource pool can serve multiple users, dynamically or reallocate different physical and virtual resources according to the needs of users.

Fast scalability services: one server can be virtualized into multiple, and resources usually seem unlimited to users.

Measurable services: cloud computing systems can automatically control, monitor, optimize, report and cancel the use of resources, and provide users with transparent usage statistics and real-time settlement services.

So how are these services provided to us?

Compare a cloud service provider that provides cloud computing services to a hotel: what if you want to throw a party and need food? Of course, it is to bring soft girl coins, set the type of banquet, find the hotel you want, the hotel will prepare tables and chairs, stools, pots and dishes, and provide all the food for Mr. document's banquet.

The calculation fee charged by cloud service providers based on usage can be compared to checkout: after the banquet is over, according to the amount of materials used, the document will directly pay the bill and leave without the need to clean up, and the hotel will recycle it.

WHERE

Where are cloud computing resources?

Of course, the resources of cloud computing are placed in the cloud, that is, the resource pool.

But there are so many resources in cloud computing, it is impossible to put them all in the resource pool, right? Certainly not. Cloud computing resources are stored in different places according to different deployment models.

Follow the documentation to take a look at the differences in deployment models:

Public cloud: put it in a public place and pay for it at any time. The scale is very large, but the security is relatively low. Google Cloud, Aliyun, Tencent Cloud and Baidu Cloud are all public cloud vendors.

Private cloud: proprietary services deployed by enterprises according to their own needs can be deployed internally or hosted to external cloud service providers with high security and good experience. Vmware, Shenzhen convincing, Huawei Cloud and Qingyun are all private cloud vendors.

Community cloud: provide services to an industry or a geographical area, usually organizations with similar needs share common infrastructure, such as government cloud, financial cloud, and so on.

Hybrid cloud: combining the advantages of public cloud and private cloud, it is the main model and development direction of cloud computing in recent years, saving money and security.

WHO

Who is using cloud computing? Cloud computing sounds very high-end, is it only used by the relevant staff? No, every one of us is using cloud computing. For example, all kinds of office meeting software, health sign-in, health code, smart home.

In fact, cloud computing is very inclusive, providing different types of services for people with different needs:

SaaS (Software as a Service): users who need to use software anytime and anywhere, but do not want to download and install it, can choose to use SaaS service. Such as Google Apps, Microsoft office365, Kingdee and so on are typical representatives of SaaS service types.

PaaS (platform as a Service): users who do not want to purchase and deploy resources such as servers, operating systems, databases and web middleware, but also want to run their own applications, can choose to build their own applications directly on PaaS. Such as Google App Engine, Microsoft Azure and so on are typical representatives of PaaS service types.

IaaS (Infrastructure as a Service): users who need to use infrastructure services, including servers, storage, and networks, but do not want to increase the cost of building a data center, can use IaaS services. Commercial software includes Amazon AWS and Google CloudEngine, while open source software includes OpenStack and CloudFoundry.

1 W talk about the future WHEN of cloud computing

When is the opportunity for cloud computing? The previous development of cloud computing technology paid more attention to the integrity of its own industrial chain, and with the passage of time, the development was also close to saturation.

However, with the official launch of the "East and West" project, cloud computing, as the key carrier of its process computing power, has also ushered in new opportunities for development:

Western Digital Center can reduce the land occupation cost and power cost of cloud computing.

The construction of data center cluster makes the cloud computing industry chain longer and larger.

The whole "East and West" project has expanded the scale of cloud computing facilities so that they can provide more computing power.

No matter how big the cloud is, it needs to carry a piece of sky, and the "counting from east to west" project provides a broader sky for cloud computing.

To sum up, understanding cloud computing only needs to start from three aspects: basic features, service model and deployment model, which is clear enough. If you can't remember, the document gentleman here provides you with a simple mind map, please save ~

This article comes from the official account of Wechat: ZTE documents (ID:ztedoc)

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