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This article will explain in detail what the three service models of cloud computing are. The editor thinks it is very practical, so I share it with you as a reference. I hope you can get something after reading this article.

Three service models of cloud computing: IaaS,PaaS and SaaS

Infrastructure (Infrastructure)-as-a-Service,Platform (platform)-as-a-Service,Software (Software)-as-a-Service. Infrastructure is at the bottom, platform is in the middle, and software is at the top.

IaaS: Infrastructure-as-a-Service (Infrastructure as a Service) is the first layer.

PaaS: the second layer of Platform-as-a-Service (platform as a Service) is called PaaS, which is sometimes called middleware.

SaaS: Software-as-a-Service (Software as a Service) is the third layer.

At the bottom, infrastructure as a service-IaaS

IaaS packages computing platforms such as servers with storage and network resources through virtualization technology and provides them to users in the form of API interfaces. Users no longer have to rent a computer room or maintain their own servers and switches, they only need to purchase IaaS services to obtain these resources.

Platform as a Service on IaaS-- PaaS

PaaS is built on IaaS and provides a running environment for business software in addition to the infrastructure. The "virtual host" often used by personal websites actually belongs to the category of PaaS. The individual webmaster only needs to upload the website source code to the address of the "virtual host", and the "virtual host" will automatically run the code to generate the corresponding Web page. In addition to forming the environment in which the software itself runs, PaaS usually has corresponding storage interfaces, and these resources can be called directly through FTP and other methods, and users do not need to initialize the bare disk from scratch.

Top layer, Software as a Service-- SaaS

SaaS is the most mature and well-known type of cloud computing service, and software as a service itself has been a very popular concept before cloud computing really became hot. SaaS's goal is to put the back-end environment in which all businesses run in the cloud and provide services directly to end users through a thin client, usually a Web browser. End users request services from the cloud on demand, without the need to maintain any infrastructure or software operating environment locally. The difference between SaaS and PaaS is that it is not the developers who use SaaS, but the end users of the software.

Iaas\ / paas\\ / saas is an indispensable part of cloud computing. Professional text is difficult to understand, so let me use a metaphor to illustrate the relationship between the three. If we need to build a road, then issa is the cornerstone of the road, paas is the steel and concrete of the road, making the road stronger, and saas is used for other people's use after the road is built. If you can combine these three perfectly, then such a cloud server is advanced. This is the end of the article on "what are the three service models of cloud computing". I hope the above content can be helpful to you, so that you can learn more knowledge. if you think the article is good, please share it for more people to see.

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