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Software as a service. Software as a service (SaaS / sæs / [1]) is a cloud computing service model where the provider offers use of application software to a client and manages all needed physical and software resources. [2] Unlike other software delivery models, it separates "the possession and ownership of software from its use". [3]
Cloud computing[ 1 ] is the on-demand availability of computer system resources, especially data storage (cloud storage) and computing power, without direct active management by the user. [ 2 ] Large clouds often have functions distributed over multiple locations, each of which is a data center.
e. Cloud computing security or, more simply, cloud security, refers to a broad set of policies, technologies, applications, and controls utilized to protect virtualized IP, data, applications, services, and the associated infrastructure of cloud computing. It is a sub-domain of computer security, network security, and, more broadly, information ...
IaaS service components Cloud Controller, Cluster Controller, Walrus, Storage Controller, and VMware Broker are configurable as redundant systems that are resilient to multiple types of failures. Management state of the cloud machine is preserved and reverted to normal operating conditions in the event of a hardware or software failure.
CloudSim is a framework for modeling and simulation of cloud computing infrastructures and services. [1] Originally built primarily at the Cloud Computing and Distributed Systems (CLOUDS) Laboratory, [2] the University of Melbourne, Australia, CloudSim has become one of the most popular open source [citation needed] cloud simulators in the research and academia.
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 ...
Containerization (computing) In software engineering, containerization is operating-system–level virtualization or application-level virtualization over multiple network resources so that software applications can run in isolated user spaces called containers in any cloud or non-cloud environment, regardless of type or vendor. [ 1 ]
A Kubernetes service is a set of pods that work together, such as one tier of a multi-tier application. The set of pods that constitute a service are defined by a label selector. [ 31 ] Kubernetes provides two modes of service discovery, using environment variables or using Kubernetes DNS. [ 59 ]