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What is cloud computing?

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What is cloud computing?

Post by Techpedia » Fri Aug 18, 2017 1:45 am

The last years have reinforced the concept that information processing and storing can be done more efficiently, centrally, on large spaces(farms or servers) of computing and storage systems accessible via the Internet. When computing resources in distant data centers and computing spaces are used rather than local computing systems (in the local hard drives and storages), we talk about network-centric computing and network-centric content.

We will discuss this concept in detail in this article. Advancements in networking and other areas such as massive online storages are responsible for the acceptance of the two new computing models and led to the grid computing movement in the early 1990s and, since 2005, to utility computing concept and cloud computing concept.

In utility computing the hardware and software resources are based primarily on large data centers and users can pay as they consume computing, storage, and communication resources. Utility computing often requires a cloud-like infrastructure, but it differs from cloud computing, since focus is on the business model for providing the computing services.

Cloud computing is a path to utility computing embraced by major IT companies around the world, such as Amazon, Apple, HTC, Google, HP, IBM, Microsoft, Oracle, Autodesk and others.

Cloud computing delivery models are shown in the picture. There are three cloud delivery models: Software-as-a-Service (SaaS), Platform-as-a-Service (PaaS), and Infrastructure-as-a-Service (IaaS), deployed as public, private, community and hybrid clouds.


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