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{{Main|Cloud storage}}
An online network storage where data is stored and accessible to multiple clients. Cloud storage is generally deployed in the following configurations: [[Cloud computing#Public|public cloud]], [[Cloud computing#Private cloud|private cloud]], [[Cloud computing#Community|community cloud]], or some combination of the three also known as [[Cloud computing#Hybrid|hybrid cloud]].<ref name="bare_url">{{cite web|title = The NIST Definition of Cloud Computing. NIST Special Publication 800-145 (September 2011). National Institute of Standards and Technology, U.S. Department of Commerce |author1=Mell, P. |author2=Grance, T. |url=http://csrc.nist.gov/publications/nistpubs/800-145/SP800-145.pdf |date=September 2011 |doi=10.6028/NIST.SP.800-145 |accessdate=2012-05-20}}</ref>
In order to be effective, the cloud storage needs to be agile, flexible, scalable, [[multi-tenancy]], and secure.<ref>{{cite web|title = Virtualized Enterprise Storage for Flexible, Scalable Private Clouds. Reprinted from Dell Power Solutions, 2012 Issue 1 |author1=Sherbak, T. |author2=Sweere, N. |author3=Belapurkar, V. |name-list-style=amp |url=http://i.dell.com/sites/content/business/solutions/power/en/Documents/ps1q12-20120209-sherbak.pdf |accessdate=2012-05-27}}</ref>
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The [[software-as-a-service]] (SaaS) service-model involves the cloud provider installing and maintaining software in the cloud and users running the software from cloud over the Internet (or Intranet). The users' client machines require no installation of any application-specific software since cloud applications run in the cloud. 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 annual fee.<ref name="Chou">
{{cite book|title = Introduction to Cloud Computing: Business & Technology|first = Timothy|last = Chou|url = https://www.scribd.com/doc/64699897/Introduction-to-Cloud-Computing-Business-and-Technology}}</ref><ref>{{cite web |last1=Daisy |first1=witson |title=what is cloud computing |date=25 September 2023 |url=https://www.janbasktraining.com/blog/what-is-cloud-computing/ |publisher=JanBask}}</ref>
Software as a service provides the equivalent of installed applications in the traditional (non-cloud computing) delivery of applications.<ref name="enterpriseirregulars">
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# flex tenancy
Of these, flex tenancy is considered the most user adaptive SaaS paradigm in designated multi-input four way manifold models.<ref name="Andrikopoulos">{{cite
===Development as a service (DaaS)===
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===Infrastructure as a service (IaaS)===
[[Infrastructure as a service]] is taking the physical hardware and going completely virtual (e.g. all servers, networks, storage, and system management all existing in the cloud). This is the equivalent to infrastructure and hardware in the traditional (non
==Networking==
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