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  2. Infrastructure as a service - Wikipedia

    en.wikipedia.org/wiki/Infrastructure_as_a_service

    IaaS services are typically billed as a utility: cost reflects the amount of resources allocated or consumed. Typically, IaaS involves the use of a cloud orchestration technology such as OpenStack, Apache CloudStack, or OpenNebula. It manages the creation of a virtual machine (VM) and decides on the hypervisor (i.e. physical host) in order to ...

  3. Cloud-computing comparison - Wikipedia

    en.wikipedia.org/wiki/Cloud-computing_comparison

    Toggle IaaS (Infrastructure as a service) subsection. ... PaaS providers which can run on IaaS providers ("itself" means the provider is both PaaS and IaaS):

  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

    In the PaaS models, cloud providers deliver a computing platform, typically including an operating system, programming-language execution environment, database, and the web server. Application developers develop and run their software on a cloud platform instead of directly buying and managing the underlying hardware and software layers.

  6. Platform as a service - Wikipedia

    en.wikipedia.org/wiki/Platform_as_a_service

    Platform as a service (PaaS) or application platform as a service (aPaaS) or platform-based service is a cloud computing service model where users provision, instantiate, run and manage a modular bundle of a computing platform and applications, without the complexity of building and maintaining the infrastructure associated with developing and launching application(s), and to allow developers ...

  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.

  8. Software industry - Wikipedia

    en.wikipedia.org/wiki/Software_industry

    Software industry business models include SaaS (subscription-based), PaaS (platform services), IaaS (infrastructure services), and freemium (free with premium features). Others are perpetual licenses (one-time fee), ad-supported (free with ads), open source (free with paid support), pay-per-use (usage-based), and consulting/customization services.

  9. as a service - Wikipedia

    en.wikipedia.org/wiki/As_a_service

    "X as a service" (rendered as *aaS in acronyms) is a phrasal template for any business model in which a product use is offered as a subscription-based service rather than as an artifact owned and maintained by the customer. Originating from the software as a service concept that appeared in the 2010s with the advent of cloud computing, [1] [2] the template has expanded to numerous offerings in t