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What are IaaS, PaaS and SaaS respectively? For this problem, this article introduces the corresponding analysis and solution in detail, hoping to help more small partners who want to solve this problem find a simpler and easier way.

Clouds are layered.

Any company that offers its services on the Internet can be called a cloud computing company. In fact, cloud computing is divided into several layers, namely Infrastructure (infrastructure)-as-a-Service, Platform (platform)-as-a-Service, Software (software)-as-a-Service. Infrastructure is at the bottom, platforms are in the middle, and software is at the top. Other "soft" layers can be added above these layers.

IaaS: Infrastructure-as-a-Service

The first layer is called IaaS, sometimes called Hardware-as-a-Service, and a few years ago, if you wanted to run enterprise applications in your office or on your company website, you needed to buy servers, or other expensive hardware, to control local applications and get your business running.

But now with IaaS, you can outsource your hardware elsewhere. IaaS provides offsite servers, storage and networking hardware that you can rent. Saving maintenance costs and office space, companies can run their applications on the hardware at any time.

Some of the big IaaS companies include Amazon, Microsoft, VMWare, Rackspace and Red Hat. But these companies all have their own expertise, such as Amazon and Microsoft do not just give you IaaS, they also rent their computing power to you to host your website.

PaaS: Platform-as-a-Service

The second layer is called PaaS, sometimes called middleware. All of your company's development can be done at this level, saving time and resources.

PaaS provides solutions for developing and distributing applications online, such as virtual servers and operating systems. This saves you money on hardware and makes it easier to collaborate between distributed studios. Web application management, application design, application hosting, storage, security, and application development collaboration tools.

Some of the big PaaS providers are Google App Engine,Microsoft Azure, Force.com,Heroku, Engine Yard. Recent startups include AppFog, Mendix and Standing Cloud.

SaaS: Software as a Service

The third level is called SaaS. This layer is the layer that touches your daily life, mostly through web browsers. Any application on a remote server can be run over the network, which is SaaS.

The services you consume enter these categories entirely from web pages such as Netflix, MOG, Google Apps, Box.net, Dropbox or Apple iCloud. Although these web services are used for business and entertainment or both, they are also part of the cloud.

Some SaaS apps used for commerce include Citrix's GoToMeeting, Cisco's WebEx, Salesforce's CRM, ADP, Workday, and SuccessFactors.

About IaaS, PaaS and SaaS are what the answer to the question is shared here, I hope the above content can be of some help to everyone, if you still have a lot of doubts not solved, you can pay attention to the industry information channel to learn more related knowledge.

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