According to the 2011 Gartner Survey, improving the effective enforcement of network segmentation as dictated by PCI DSS Requirement 1 stands as the top technical priority today among companies working to comply with the standards, yet no single model for better addressing the challenge has emerged.

In fact, many organizations still lack the visibility necessary to ensure policy enforcement, or communicate the information needed to demonstrate their ability to do so. Therefore, enterprise security management is actively seeking new methods to tackle these long-standing conundrums.