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CLOUD COMPUTING IT is a service provider which provides information. IT allows the employees to work remotely IT is a on demand network access. IT helps to share a large pool of information's. For e.g.(networks, services,applications, software. IT delivers information's without a direct connection to the server. IT define as cloud because the services inside this computing is vast just like cloud.

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WHY DO WE REQUIRE CLOUD COMPUTING. IT gives large services as compare to other services. When the demand of the same subject is more there is no affect on this service while the servers are crash. IT saves money as compare to other computing service's. Widespread availability irrespective of geographical precincts. Allow for easy connectivity to servers and information sharing.

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System crash due to the large demand of markets SERVER Demands Disadvantage of ordinary services

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Process of cloud computing is given in several steps. They are:- The request customer directly goes to the central server either it is programme or videogames. Central server administers the system, monitoring traffic and client demands to ensure everything runs smoothly. Central server follows some rules which is called protocols and through this it helps to find the demand of customers. When the server finds the demand of customer applications then the request is resolve as fast as can. The main advantage is that in large demands services better the n ordinary services.

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Applications and services. request Request goes to the server Reply Request completed

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Logical diagram of cloud computing.

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There are many types of cloud computing but generally there are three types of cloud computing which are used are in market. They are:- Infrastructure as a service(Iaas). Platform as a service.(PaaS). Software as a service(SaaS). And rest are Network as a service(NaaS). Storage as a service(STaaS). Security as a service(SECaaS). Data as a service(DaaS).

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SaaS allows a business potential to reduce it operational costs by outsourcing hard ware and software maintenance support to the cloud provider. IN business model SaaS, users are provided access to application software and databases. SaaS is sometimes referred to as on-demand software and is usually priced on a pay-per-use basis. SaaS providers generally price applications using a subscription fee.

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Platform as a service (PaaS) is a category of cloud computing services that provide a computing platform and a solution stack as a service. In this model, the consumer creates the software using tools and/or libraries from the provider PaaS facilitates the deployment of applications without the cost of buying and managing the hardware and software and provisioning hosting capabilities. PaaS offerings may also include facilities for application design, application development, testing and deployment.

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IaaS providers offer computers, as physical or more often as virtual machines, and other resources. IaaS clouds often offer additional resources such as images in a virtual machine image library, raw (block) and file-based storage, firewalls, load balancers, IP addresses. IaaS cloud providers supply these resources on demand from their large pools installed in data centers

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sche Schematic diagram of cloud computing.

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Working process of the deployment of cloud computing

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Deployment models of cloud computing. There are three deployment models of cloud computing. They are:- Public. Hybrid. Private. community

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Public cloud applications, storage, and other resources are made available to the general public by a service provider. These services are free or offered on a pay-per-use model. public cloud service providers like Amazon AWS etc own and operate the infrastructure and offer access only via Internet.

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Hybrid cloud is a composition of two or more clouds (private, community or public) that remain unique entities but are bound together. Hybrid cloud architecture requires both on-premises resources and off- site (remote) server-based cloud infrastructure. Hybrid clouds lack the flexibility, security and certainty of in-house applications. Hybrid cloud provides the flexibility of in house applications with the fault tolerance and scalability of cloud based services.

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Community cloud shares infrastructure between several organizations from a specific community with common concerns (security, compliance, jurisdiction, etc.) All these community shares are managed internally or by a third party and hosted internally or externally. The costs are spread over fewer users than a public cloud (but more than a private cloud), so only some of the cost savings potential of cloud computing are realized.

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Private cloud is cloud infrastructure operated solely for a single organization. Private cloud are managed internally or by a third party and hosted internally. private cloud project requires a significant level and degree of engagement to virtualize the business environment. IT will require the organization to reevaluate decisions about existing resources.

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Working process of deployment clouds.

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Graph of the global demands of cloud computing.

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Cloud computing takes very quickly in the market because of his properties. IT is a cost effective one.It is also a one reason to take cloud computing in the market. IT is helpful for small industries business to compete the world. IT has many applications to satisfy the customer requirement.

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