Cloud Computing

Cloud Computing

1. Cloud Computing Elements

   • Broad network access: Capabilities are available over the network and accessed through standard mechanisms that promote use by heterogeneous thin or thick client platforms, as well as other traditional or cloud-based software services.
   • Rapid elasticity: Cloud computing gives you the ability to expand and reduce resources according to your specific service requirement.
   • Measured service: Cloud systems automatically control and optimize resource use by leveraging a metering capability at some level of abstraction appropriate to the type of service.
   • On- demand self- service: A consumer can unilaterally provision computing capabilities, such as server time and network storage, as needed automatically without requiring human interaction with each service provider. Because the service is on demand, the resources are not permanent parts of your IT infrastructure.
   • Resource pooling: The provider’s computing resources are pooled to serve multiple consumers using a multi- tenant model, with different physical and virtual resources dynamically assigned and reassigned according to consumer demand.

2. Cloud Computing Reference Architecture

   • The NIST cloud computing reference architecture focuses on the requirements of “what” cloud services provide, not a “how to” design solution and implementation. The reference architecture is intended to facilitate the understanding of the operational intricacies in cloud computing. It does not represent the system architecture of a specific cloud computing system; instead it is a tool for describing, discussing, and developing a system-specific architecture using a common framework of reference.
     • Cloud consumer: A person or organization that maintains a business relationship with, and uses service from, cloud providers.
     • Cloud provider (CP): A person, organization, or entity responsible for making a service available to interested parties.
     • Cloud auditor: A party that can conduct independent assessment of cloud services, information system operations, performance, and security of the cloud implementation
     • Cloud broker: An entity that manages the use, performance, and delivery of cloud services, and negotiates relationships between CPs and cloud consumers.
     • Cloud carrier: An intermediary that provides connectivity and transport of cloud services from CPs to cloud consumers.

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