What is cloud computing? ||Why should I care about the cloud ||

Cloud computing is the use of various services, such as software development platforms, servers, storage and software, over the internet, often referred to as the "cloud." In general, there are three cloud computing characteristics that are common among all cloud-computing vendors: The back-end of the application (especially hardware) is completely managed by a cloud vendor. A user only pays for services used (memory, processing time and bandwidth, etc.). Services are scalable Many cloud computing advancements are closely related to virtualization. The ability to pay on demand and scale quickly is largely a result of cloud computing vendors being able to pool resources that may be divided among multiple clients. It is common to categorize cloud computing services as Infrastructure as a Service (IaaS), Platform as a Service (PaaS) or Software as a Service (SaaS).

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