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A plethora of definitions have been given explaining the cloud computing.
Cloud computing is defined as a model for enabling ubiquitous, convenient, on-demand network access to a shared pool of configurable computing resources (e.g.
Hence, the data centres may locate in any part of the world out of reach and control of users.
But, one has to understand that various issues need to be understand before getting into a new technology of architectural framework.
Cloud computing architectures making use of multiple cryptographic techniques towards providing cryptographic cloud storage have been proposed in .
Infrastructure as a Service (Iaa S) is the lowest layer that provides basic infrastructure support service.
networks, servers, storage devices and services) that can be rapidly provisioned and released with minimal management effort or service provider interaction .
In such an environment users need not own the infrastructure for various computing services.
In Saa S, if the MCS is damaged, or compromised, the control over the cloud environment is lost. In the Platform as a Service approach (Paa S), the offering also includes a software execution environment.
For example, there could be a Paa S application server that enables the lone developer to deploy web-based applications without buying actual servers and setting them up.
Platform as a Service (Paa S) layer is the middle layer, which offers platform oriented services, besides providing the environment for hosting user’s applications.