The document provides details on the design and implementation of an interactive voice response (IVR) system backend. It includes sections on features like the admin portal, users, roles and permissions, and two-factor authentication. It also covers requirements, acronyms, the IVR system hierarchy and call flows, and a similar system architecture. The goal is to deploy an IVR system integrated with the Monty Mobile omnichannel platform that can handle over 220,000 calls monthly and support multiple languages and applications.