Cloud Computing

Cloud Computing:

It is the use of remote servers on the internet to store and manage process data rather than local servers or on personal computers.

    1.Service Model of Cloud:
  • IaaS:
Infrastructure as a services provides the virtualization of computing resources over the internet. There is no need for a physical machine. It allows the organization to outsource its equipment requirements, including the hardware and all support operations. The IaaS service provider owns equipment, houses it in its data center, and performs all the required hardware maintenance. The customer essentially rent access to the equipment and often pays on a per-use basis.
  • PaaS:
Platform as a service provides hardware and software tools over the internet without control over underlying architecture like storage, memory and servers. Cloud provides the ability to the customer to deploy applications using tools provided by the provider.
  • SaaS:
It includes any software or application provided to user over a network such as internet. Internet user access the SaaS applications with a web browser. Web based email is an example of SaaS. This includes Gmail, Yahoo mail and others. The service provides all the components of email to users via a simple web browsers.
    2. Deployment Model of Cloud:
There are three deployment models of cloud public, private and hybrid. Public deployment is a model that is shared; it means that the resources are shared among many peoples. Private deployment is for specific clients. If deployment used public and private both then it comes under hybrid. For example if you are performing analysis on data then it will be on private and if after analysis we need to share results on public then this case comes under hybrid model.

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