An organization is in the process of evaluating service providers for an upcoming migration to cloud-based services for the organization's ERP system. As part of the requirements defined by the…

Public cloud IaaS with single-tenancy provides dedicated hardware but still operates within shared public cloud infrastructure, which may not satisfy stringent regulatory segmentation requirements.

A private cloud environment restricts infrastructure access to a single organization, eliminating cross-customer data exposure. Single-tenancy in PaaS ensures dedicated compute and storage resources are not shared with other customers, meeting strict regulatory mandates for data segmentation and isolation. Together, these properties give the organization full control over data boundaries and auditability required for ERP compliance.

Multitenancy in a private SaaS environment means multiple customers share the same application instance, violating the isolation requirement even if the underlying cloud is private.

Public cloud with private SaaS backed by private IaaS is a hybrid model that retains reliance on public cloud infrastructure, introducing compliance gaps for organizations requiring strict data isolation.