Which characteristic of cloud computing refers to sharing physical assets among multiple customers?

Rapid scalability refers to the ability to quickly adjust resources to meet changing demand. While this is a key feature of cloud computing, it does not specifically pertain to the sharing of physical assets among customers. Instead, it highlights the flexibility and responsiveness of resource allocation based on individual customer needs.

On-demand self-service allows users to provision computing capabilities as needed without requiring human intervention from the service provider. This characteristic emphasizes user control and accessibility rather than the shared nature of physical resources among multiple customers.

Measured service involves monitoring and controlling resource usage so that customers are billed according to their actual consumption. While this feature ensures transparency and cost-effectiveness, it does not specifically address the concept of sharing physical assets among different clients, which is the essence of resource pooling.