Network segmentation is a concept that dates back to the start of enterprise IT systems. The simplest demonstration of this is separating application and infrastructure components with a firewall. This concept is now a routine part of building data centers and application architectures. In fact, it’s nearly impossible to find examples of enterprises without some network segmentation model in place.
More recently, many have stated that microsegmentation is sufficient to secure these services. Microsegmentation techniques provide granular point-to-point traffic restrictions between services and can be user-session aware.