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2. Cloud-computing comparison - Wikipedia

   en.wikipedia.org/wiki/Cloud-computing_comparison

   Toggle SaaS (Software as a Service) subsection ... The following is a comparison of cloud-computing software ... ("itself" means 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] In IaaS, the ...

4. Cloud computing - Wikipedia

   en.wikipedia.org/wiki/Cloud_computing

   These responsibilities vary depending on the cloud service model—Infrastructure as a Service (IaaS), Platform as a Service (PaaS), or Software as a Service (SaaS)—with customers typically having more control and responsibility in IaaS environments and progressively less in PaaS and SaaS models, often trading control for convenience and ...

5. 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 ...

6. Infrastructure as a service - Wikipedia

   en.wikipedia.org/wiki/Infrastructure_as_a_service

   Services can be scaled on-demand by the user. According to the Internet Engineering Task Force (IETF), such infrastructure is the most basic cloud-service model. IaaS can be hosted in a public cloud (where users share hardware, storage, and network devices), a private cloud (users do not share resources), or a hybrid cloud (combination of both).

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.