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ISO frames cloud computing as on-demand, self-service access to a scalable and elastic pool of shareable resources.
Cloud computing is defined by ISO as a paradigm that enables network access to a scalable and elastic pool of shareable physical or virtual resources, with self-service provisioning and administration available on demand. In this framing, the “cloud” is not just a metaphor for remote servers, but a model where users obtain computing resources through standardized network access while the provider manages the underlying infrastructure and service operations. NIST further characterizes cloud systems using five essential characteristics: on-demand self-service, broad network access, resource pooling (typically multi-tenant), rapid elasticity, and measured service. Together, these characteristics describe how cloud resources can be provisioned automatically, accessed from diverse client platforms, shared across consumers, scaled quickly to match demand, and metered for transparency and cost/accounting. ISO later expanded and refined these ideas in subsequent standards, reinforcing that cloud computing is both a service delivery model and a set of operational properties.
ISO frames cloud computing as on-demand, self-service access to a scalable and elastic pool of shareable resources.
NIST’s five essential characteristics define how cloud systems behave: self-service, network access, pooling, elasticity, and measured service.
The ISO/NIST approach emphasizes standardized access and provider-managed resource provisioning, rather than users managing individual infrastructure components.
ISO defines cloud computing as enabling network access to a scalable and elastic pool of shareable resources with self-service provisioning and administration on demand.
NIST identifies five essential characteristics of cloud systems: on-demand self-service, broad network access, resource pooling, rapid elasticity, and measured service.
A consumer can automatically provision computing capabilities as needed without requiring human interaction with each service provider.
The provider pools resources to serve multiple consumers using a multi-tenant model, dynamically assigning and reassigning resources based on demand.
Cloud systems meter and monitor resource usage so it can be controlled, optimized, and reported for both provider and consumer transparency.
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