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This article mainly explains "what is the difference between cloud computing service model Iaas and Paas". The content of the article is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn "what is the difference between cloud computing service model Iaas and Paas"?

What is the difference between Iaas and Paas, the service model of cloud computing? With the rise of the cloud computing boom, "cloud service" has become a household name. But even so, many contemporary enterprises have little knowledge of cloud services and are not familiar with the difference between Iaas and Paas, the service model of cloud computing.

1. Integration rate and economy: the integration rate of PaaS platform is very high. For example, Google App Engine, the representative of PaaS, can carry thousands of applications on a server, while the integration rate of ordinary IaaS platform is not more than 100 at most, and it is generally around 10, which makes IaaS less economical than PaaS.

2. Billing and supervision: because the PaaS platform not only reaches the operating system level that IaaS platform can achieve in terms of billing and supervision, such as CPU and memory usage, but also achieves the application layer, such as application response time (Response Time) or the number of transactions consumed by the application, which will improve the accuracy of billing and management.

3. Open standards: although many IaaS platforms have certain proprietary functions, due to the existence of protocols such as OVF, IaaS is making steady progress in terms of cross-platform and avoiding being locked by suppliers. On the other hand, the situation of the PaaS platform is not optimistic, because there is a certain private API in both Google's App Engine and Salesforce's Force.com.

4, learning difficulty: because the development and management of applications on IaaS is close to the existing way, while the development of PaaS may need to learn a new language or a new framework, so it is less difficult to learn IaaS.

Speaking of the future of the two, especially the competition between the two, I personally think that in the short term, because of the advantages of the IaaS model in supporting applications and learning difficulties, IaaS will become the first choice for developers in the short term, but in the long run, because of the high integration rate of the PaaS model, the economy brought about by the PaaS model can solve challenges such as versatility and supported applications. It will replace IaaS as the "new favorite" of developers.

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