Cloud computing refers to the use of networked infrastructure software and the capacity to provide resources to users in an on-demand environment. With cloud computing, information is permanently stored in servers on the Internet and cached temporarily on desktop computers, notebooks, handhelds, or other client devices. In this model, often referred to as “utility computing,” users can access common business applications online from virtually any end user device, on a pay-per-use basis.
By design, cloud computing is scalable and elastic, offering IT departments a way to increase capacity or add capabilities on demand, without investing in new infrastructure, training new personnel, or licensing new software.
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Categories of Cloud
When one digs more into the Cloud, there are many types and models of Cloud like Private Cloud, Public Cloud, Hybrid Cloud, Community Cloud, Enterprise Cloud, Infrastructure as a service (IAAS), Platform as a service (PAAS), Software as a Service (SAAS), Business as a service (BAAS), Gaming as a service (GAAS), BPaas, Haas…or easier to say…Anything as a service(XAAS).
• SaaS (Software as a Service) is the category of cloud computing in which the main resources available as a service are software applications
• PaaS (Platform as a Service) is the category/application of cloud computing in which the service providers deliver a computing platform or a solution stack to their subscribers over the internet.
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