NFVI (Network Function Virtualization Infrastructure)
NFVI refers to the underlying infrastructure layer in NFV, which provides the compute, storage, and networking resources required to run VNFs.
Analogy: If VNFs are the applications, then NFVI is the operating system and hardware that they run on.
Why It Matters: NFVI forms the foundation of an NFV deployment, enabling the virtualization of network functions and providing the necessary resources for their execution.