As Internet-of-Things (IoT) and mobile devices continue to proliferate, the enterprise attack surface grows broader. New gaps and vulnerabilities in the network perimeter are exposed. And at the same time, zero-day exploits and advanced persistent threats grow more sophisticated in their endpoint attack strategies. Security architects need improved access controls to protect devices and the broader network from threats and meet increasingly strict compliance standards. To address these challenges, network access control (NAC) solutions must evolve to provide more robust capabilities that support current needs—threat awareness, containment, and mitigation.