One of the most impactful changes in data center infrastructures over the last decade is virtualization—first for servers, and then for storage and networking. Architectural approaches such as SDN and NFV optimized networks and services to deliver more flexible and interoperable services across the LAN and WAN. More recently, containers have added yet another degree of agility to data centers and the cloud. As you migrate from physical to virtual infrastructure, your customers’, employees’, and subscribers’ quality of experience should be maintained or improved. You also want to have total visibility into your virtualized infrastructure and data.