ISC2 Certified Cloud Security Professional (CCSP) Practice Question

The NIST cloud computing definition lists five essential characteristics. The situation described-where the provider's computing resources are aggregated to serve multiple customers using a multi-tenant model and are dynamically assigned and reassigned according to demand-matches the characteristic called "resource pooling."

Why the other options are wrong:

• On-demand self-service refers to customers unilaterally provisioning computing resources such as server time or storage without human interaction, which is not the focus of the scenario.
• Broad network access highlights availability over standard networks and heterogeneous client platforms, not shared multi-tenant resource allocation.
• Rapid elasticity concerns the automatic scaling of resources outward and inward commensurate with demand; while related, the key point in the scenario is sharing and dynamic reassignment among multiple tenants, which defines resource pooling.