What is the role of NFVI?

Domain Name Service (DNS) is a network function that runs on the NFVI as a Virtual Network Function (VNF), not a role of the infrastructure itself.

Intrusion Detection (ID) is a security network function that runs on the NFVI as a VNF, not a role of the infrastructure itself.

The Network Functions Virtualization Infrastructure (NFVI) is the platform that provides the compute, storage, and networking resources for Virtual Network Functions (VNFs). A key aspect of an NFVI is to provide capabilities to monitor the health, performance, and resource utilization of both the underlying infrastructure and the VNFs running on it, essential for managing the virtualized environment.

Network Address Translation (NAT) is a network function that runs on the NFVI as a VNF, not a role of the infrastructure itself.