Which cloud computing model is appropriate for a company that requires an isolated environment which...

A private cloud is appropriate when a company requires an isolated environment, strict compliance support, and enhanced control over security. Private cloud infrastructure is dedicated to a single organization and can be hosted on-premises or by a provider. It allows greater control over data location, access, architecture, and security configuration than a general public cloud model. A hybrid cloud combines private and public resources, but the question emphasizes isolation rather than mixed deployment. A public cloud is shared provider infrastructure used by many customers and may not satisfy isolation requirements without additional controls. A community cloud is shared by organizations with common requirements, but it is not dedicated to one organization. Private cloud does not automatically guarantee security; it still requires strong identity controls, monitoring, patching, segmentation, and governance. Its advantage is control and dedicated use, which can support sensitive or regulated workloads. Reference/topics: Cloud Security 5.1, cloud deployment models; Cloud Security 5.3, shared responsibility.