Legacy networks, with their decade-old architecture, will be crushed by the onslaught of applications, virtualization, and rich media. Conventional three-tier data center networks cannot meet the security, agility, and performance requirements of virtualized cloud computing environments. The legacy three‑tier network architecture is constrained by oversubscribed, low bandwidth and high latency—the exact opposite of what video collaboration requires.

Securing the legacy network is no different. IT is stuck with a mishmash of point security tools to manage different security components. This fractured control drives up cost and introduces risk in an era of increasingly sophisticated threats and expanding regulations. Few companies can afford a security misstep.