What are the characteristics of cloud computing as per NIST? Explain.

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NIST'S FIVE ESSENTIAL CHARACTERISTICS OF CLOUD COMPUTING 

  1. On-demand self-service
  2. Broad network access
  3. Resource pooling
  4. Rapid Elasticity Measured service

On-Demand Self service

Email, Application Network, and Server services may all be delivered without requiring contact with each service provider. Self-service refers to when a customer completes all of the steps required to obtain a service without having to go through an IT department. For example - The consumer's request is then automatically processed by the cloud infrastructure, without human intervention on the provider's side.

Broad Network Access

Cloud services are accessible over the Internet and may be accessed using a standard mechanism that allows for usage by a variety of clients, including mobile phones and laptops.




Resource Pooling

Different physical and virtual resources are dynamically assigned and reassigned according to the customers' needs, with the provider's computer capabilities pooled together to serve numerous clients The client has little control or awareness of the specific location of the delivered resources but may be able to define location at a higher level of abstraction (e.g., country, state, or datacenter). Examples of resources include storage, processing, memory, and network bandwidth.

Rapid Elasticity

Capabilities of the cloud can be elastically provisioned and released, in some cases automatically, to scale rapidly outward and inward commensurate with demand. To the consumer, the capabilities available for provisioning often appear to be unlimited and can be appropriated in any quantity at any time.

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 (e.g., storage, processing, bandwidth, and active use account). Resource usage can be monitored, controlled, and reported, providing transparency for both the provider and consumer of the utilized service.

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