The introduction of Virtual Private Clouds (VPCs) in VCF 9.0 is the primary mechanism for achieving isolated networking in a multi-tenant environment. The correct administrative workflow involves the Provider or Organization Administrator defining IP Blocks and Quotas at the Organization level. These resource allocations act as a "bucket" of capacity from which individual departments or projects can draw. When a department creates an NSX VPC, it automatically consumes these pre-allocated IP ranges for its internal segments and services, ensuring that development and testing environments remain logically isolated at the network layer without requiring manual intervention for every subnet creation. This "consumption-based" model ensures that while departments have the flexibility to manage their own VPC resources, they remain constrained by the governance and RBAC policies defined at the higher Organization level. This approach significantly reduces the operational overhead compared to traditional VLAN segment management or complex edge firewall rules.