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Can Anyone Tell Me Different Models Of Cloud Computing? How They Work And Their Benefits?

We can list three major cloud computing models such as Infrastructure as a Service, Platform as a Service, and Software as a Service. Following are brief details about their attributes:

• Infrastructure as a Service: It helps users access raw computing power including storage or servers, via Internet. It is provided on pay-as-use basis. It is commonly referred to as hosting service wherein clients can purchase computing power of servers to cater to their needs of data storage, processing and dissemination. IaaS facilitates physical as well as virtual resources to build cloud system.
• Software as a Service: It offers use of cloud based applications that need not be installed on user’s systems. The applications can be accessed over Internet can also be edited without need to download. Google Docs is the most popular example of Software as a Service. SaaS enables users to create and edit applications without need to install it on their devices. It also helps share the applications with other individuals.
• Platform as a Service: This is mainly used by developers for developing applications with help of web based tools. PaaS ensures total virtualization of infrastructure including computers, cloud storage and networking.

Following are the advantages of cloud computing models:

• On demand functionality
• Scalability to handle different levels of workloads
• Accessibility- regardless of location and time
• Reliability due to multiple redundancy characteristics
• Cost effective

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