Which cloud model enables multiple tenants to share computing resources while keeping data isolated?

Which cloud model enables multiple tenants to share computing resources while keeping data isolated?

• A. Public Cloud
• B. Private Cloud
• C. IaaS
• D. Multitenancy

Answer: (D)

Multitenancy is the pattern where many tenants share the same pool of resources—computing power, storage, and network—while each tenant’s data and configurations remain isolated from others. This isolation is achieved through virtualization, access controls, and logical segmentation, so one tenant’s activity doesn’t expose or interfere with another’s data. Because the question focuses on sharing resources across multiple customers while keeping data separate, this concept best fits.

Public cloud describes the deployment model where resources are owned by a provider and offered to many customers; it often uses multitenancy, but the term refers to how resources are delivered rather than the isolation mechanism itself. Private cloud is dedicated to a single organization, so there isn’t cross-tenant sharing. IaaS defines the services provided (like VMs and storage) but doesn’t by itself specify whether resources are shared among tenants; multitenancy is the architectural approach that enables that sharing with isolation.