Quantum is an OpenStack project to provide “network connectivity as a service” between interface devices (e.g., vNICs) managed by other Openstack services (e.g., nova). It implements the Quantum API Guide.
This document describes Quantum for contributors of the project, and assumes that you are already familiar with Quantum from an end-user perspective.
This documentation is generated by the Sphinx toolkit and lives in the source tree. Additional documentation on Quantum and other components of OpenStack can be found on the OpenStack wiki. The Quantum Development wiki is a very good place to start.