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2. Cloud-computing comparison - Wikipedia

   en.wikipedia.org/wiki/Cloud-computing_comparison

   SaaS (Software as a Service) Initial release date License(s) Written in As a service Local installations fluid Operations eCloudManager: 2009-03-01 Proprietary: Java, Groovy No Yes AppScale [33] 2009-03-07 Apache License: Python, Ruby, Go Yes Yes Cloud Foundry: 2011-04-12 Apache License: Ruby, C, Java, Go Yes Yes Cloud.com / CloudStack [34 ...

3. 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]

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. On-premises software - Wikipedia

   en.wikipedia.org/wiki/On-premises_software

   On-premises software is sometimes referred to as "shrinkwrap" software, and off-premises software is commonly called "software as a service" ("SaaS") or "cloud computing". The software consists of database and modules that are combined to particularly serve the unique needs of the large organizations regarding the automation of corporate-wide ...

6. Platform as a service - Wikipedia

   en.wikipedia.org/wiki/Platform_as_a_service

   IaaS provides virtual hardware from a provider with adjustable scalability. [1] In IaaS, the server is managed by the user, whereas in PaaS by the provider. [18] A private PaaS can typically be downloaded and installed either in a company's on-premises data center, or in a public cloud. Once the software is installed on one or more machines ...

7. Cloud computing architecture - Wikipedia

   en.wikipedia.org/wiki/Cloud_computing_architecture

   SaaS is scalable, and system administrators may load the applications on several servers. In the past, each customer would purchase and load their own copy of the application to each of their own servers, but with the SaaS the customer can access the application without installing the software locally. SaaS typically involves a monthly or ...

8. 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.

9. Software - Wikipedia

   en.wikipedia.org/wiki/Software

   Comparison of on-premise hardware and software, infrastructure as a service (IaaS), platform as a service (PaaS), and software as a service (SaaS) Software can also be categorized by how it is deployed.