Enterprises have rapidly incorporated cloud computing over the last decade, and that trend only seems to be accelerating. Private cloud infrastructure, including virtualization and software-defined networking (SDN), is in the process of transforming on-premise data centers, which host the majority of enterprise server workloads around the world. Enterprises are also embracing public clouds at an unprecedented rate, with most connecting back to on-premise environments to create a true hybrid cloud environment. For all their advantages, these accelerated infrastructural changes also raise major concerns about security, and the ability to protect end-users and sensitive data from ever-evolving cyber threats.

As today's enterprise data centers evolve from static internal environments to a mix of private, public, and hybrid clouds, organizations need to augment traditional firewalls and security appliances (deployed for north-south traffic at the network edge) with expanded protection for east-west traffic moving laterally across the network, both within internal networks and across clouds.

To maintain a strong security posture in private, public, and hybrid clouds, organizations need to increase and perhaps even reallocate security to keep pace with these more dynamic, distributed, and fast-paced environments. Here are some specific areas to consider: