Why do hybrid clouds exist?

In recent years, mixed clouds （Hybrid Cloud） By “ Fried ” It's very hot , The following is my opinion .

What is Cloud Computing ？

Before you learn about hybrid clouds , Let's first recognize the nature of Cloud Computing .

We know , Cloud computing has actually become a major form of enterprise infrastructure , It's no exaggeration to say , Cloud computing is the business of today IT framework .

Cloud computing from the ownership of infrastructure （ Builder ） From this point of view , It is divided into ： Public cloud and private cloud

• Public cloud ： from AWS,Azure, Alibaba cloud , Hua Wei Yun , Tencent cloud and other manufacturers provide a kind of on-demand rental cloud computing facilities for users all over the world
• Private cloud ： By the enterprise VMware,OpenStack,KVM And virtualization software , Self built internal cloud computing facilities

Whether it's the public cloud , Or private cloud , Compared to the traditional architecture , The cloud is characterized by virtualization and servitization .

virtualization , That is, the computer hardware resources virtual into software resources , among Server virtual machine instance 、 Virtual machine instance They are the two core resources .

As a service , The traditional “ Create a server -> Installing the operating system -> Install applications -> Using applications ” This kind of software 4 Step process , By pre configuring , When you need to use the software, you can use it with one key , such 4 The process becomes the direct use of application software （ Just one step ）. What's the meaning of this? ？ for instance ：IT The administrator should be required by the business department , To deploy a MySQL database , For business departments to do data analysis .

Then the internal process of the enterprise is generally like this ：

1. The business unit puts forward the demand
2. IT The department confirms the demand
3. IT Department delivery ： Create a server -> Installing the operating system -> install MySQL-> test MySQL Usability
4. Use by business department MySQL
5. IT Department response technical support

So after service , How the process works ？

1. The business unit finds MySQL, Use it directly
2. IT Department response technical support

Obviously, the process is greatly simplified . Mentioned earlier , Servitization requires pre configuration of some general services , It even allows users to have some personalized choices , So you need IT The Department is designing services 、 No matter the configuration service is improved .

summary ： Cloud computing can be used on demand ：【 Server virtual machine 、 Container virtual machine 】+【 Software service 】

Is there a difference between public cloud and private cloud ？

If you read the last section carefully , Then you will agree with me .

From a computational point of view , There is no difference between public cloud and private cloud . It's like the difference between a big country and a small country , The difference between a kitchen and a big family is the same , In essence, there is no difference .

If you have to talk about the difference , It's just that the public cloud provides more virtualization resources , More software services , Some cloud manufacturers even put ToB Human services for （ for example ： Trademark services 、 Intellectual property services, etc ） Also as its service catalog .

What is a hybrid cloud ？

Generally speaking , The virtualization resources and service resources on the public cloud are massive , Contemporary business organizations （ Not a special state agency or secret organization ） If you haven't used the public cloud yet, it's incredible . But the massive resources of the public cloud , Facing the different needs of different industries and enterprises , It's impossible to satisfy all business scenarios , In addition, from data security 、 Cost and efficiency , In some scenarios, private cloud has more advantages .

So we use the public cloud , It's normal to use private cloud again .

Back to using the public cloud , Large enterprises have more metrics for using the public cloud （ such as ： performance 、 framework 、 Cooperation, etc ）, Often not a single public cloud partner .

Empathy , When building your own private cloud , The technical architecture used may not be single .

The picture shows common public cloud and private cloud technology stacks

From the picture above , An enterprise faces the great challenge of managing multiple cloud technologies , come very naturally , There are software providers on the market , Can we provide a centralized cloud management software , Can manage the resources of different cloud technologies ？ obviously , There is such a market demand , There are a lot of this kind of multi cloud management software on the market at present （CMP）, Players include ：VMware,Redhat、Cisco、Dell Other giants , It also includes some IT Tool software vendors .

CMP The main functions of the system are as follows ：

• resources （ virtual machine 、 Containers 、 Storage 、 Network, etc ） Whole life cycle management , Include ： establish 、 Monitoring and destruction, etc
• Cost management
• Multi user authority and approval management , identity , Security and compliance
• Cloud migration , Backup and disaster recovery
• Automatic operation and maintenance technology
• DevOps Support

summary ：

1. A hybrid cloud is not a cloud , It's a state , Enterprises use a variety of cloud architectures , Call it a hybrid cloud .
2. Multi cloud management software is the best hybrid cloud management tool , But it's not a necessary tool

Who are the players in the hybrid cloud ？

Look directly at Gartner The magic quadrant of cloud management platform