ISC2 Certified Cloud Security Professional (CCSP) Practice Question

NIST Special Publication 800-145 lists five essential characteristics of cloud computing. "On-demand self-service" means a consumer can unilaterally provision computing capabilities, such as server time and network storage, automatically without requiring human interaction with each service's provider. This matches the requirement that developers provision and de-provision resources whenever needed via a portal or API. Resource pooling refers to the provider's shared resource model, broad network access concerns ubiquitous connectivity, and measured service is about metering resource use. None of those characteristics alone guarantee users can obtain resources without provider involvement, so they are incorrect.