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  2. Cloud-computing comparison - Wikipedia

    en.wikipedia.org/wiki/Cloud-computing_comparison

    The following is a comparison of cloud-computing software and providers. ... Provider Launched SaaS Appian: 1999 Cloud Foundry ... the provider is both PaaS and IaaS):

  3. Platform as a service - Wikipedia

    en.wikipedia.org/wiki/Platform_as_a_service

    Public PaaS is derived from software as a service (SaaS), [17] and is situated in cloud computing between SaaS and infrastructure as a service (IaaS). [1] SaaS is software hosted in the cloud so that it does not reside or run on customer computers. IaaS provides virtual hardware from a provider with adjustable scalability. [1]

  4. Software as a service - Wikipedia

    en.wikipedia.org/wiki/Software_as_a_service

    Comparison of on-premise, IaaS, PaaS, and SaaS. Infrastructure as a service (IaaS) is the most basic form of cloud computing, where infrastructure resources—such as physical computers—are not owned by the user but instead leased from a cloud provider. As a result, infrastructure resources can be increased rapidly, instead of waiting weeks ...

  5. Cloud computing - Wikipedia

    en.wikipedia.org/wiki/Cloud_computing

    Comparison of on-premise, IaaS, PaaS, and SaaS Cloud computing service models arranged as layers in a stack. The National Institute of Standards and Technology recognized three cloud service models in 2011: Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS). [2]

  6. Infrastructure as a service - Wikipedia

    en.wikipedia.org/wiki/Infrastructure_as_a_service

    IaaS clouds often offer additional resources such as a virtual-machine disk-image library, raw block storage, file or object storage, firewalls, load balancers, IP addresses, virtual local area networks (VLANs), and software bundles. [4] IaaS-cloud providers supply resources on-demand from the large pools of equipment installed in data centers.

  7. IT as a service - Wikipedia

    en.wikipedia.org/wiki/IT_as_a_service

    According to The NIST Definition of Cloud Computing, [3] there are three service models associated with cloud computing: infrastructure as a service (IaaS), platform as a service (PaaS), and software as a service (SaaS). The concept of ITaaS as an operating model is not limited to or dependent on cloud computing.

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