What is the commonly used term to refer to the movement of traffic laterally within a network?

East-west traffic refers to the lateral transmission of traffic within a network. Some networks concentrate security tools at the edges or points where networks intersect, leaving internal or east-west traffic exposed. In zero-trust environments, internal traffic is not assumed to be reliable, minimizing the risks associated with this form of lateral communication. The terms "side-stepping," "slider traffic," and "peer interconnect" were fabricated for this question, although "peer interconnect" may seem similar to peer-to-peer traffic, which may be lateral in many networks.