The document provides an introduction to OpenStack networking, detailing the transition from the previous networking service 'nova-network' to the new service 'neutron.' It explains traditional networking concepts, the rationale behind the renaming due to trademark issues, and the enhancements that neutron provides over nova-networking, including support for advanced networking features and a plugin architecture. Additionally, it discusses available plugins, demonstrates neutron capabilities, and outlines future developments in OpenStack networking.