Visibility Is an Urgent Challenge Lack of visibility is behind the worst of IT headaches, leaving the network open to malicious intrusions, as well as compliance, availability, and performance problems. Today’s soaring traffic volumes are bringing greater complexity, proliferating apps and devices, and rising virtual traffic—in fact, “east-west” traffic between virtual machines now makes up half of all traffic on the network. Virtual traffic is the culprit that spawns unmonitored "blind spots," ...