The Wireless Broadband Alliance (WBA) defines roaming set-up best practices for service providers and outlines the reasons for providing roaming services as well as suitable strategies to adopt. Standards are provided for the type of information needed from the Wi-Fi network, together with guidelines on how to exchange relevant information between involved parties. Moreover, WBA maintains a database of Operators roaming related data, including the WBAID that is solely provided and maintained by the WBA.

This WRIX Umbrella document is an integral part of the whole Wireless Roaming Intermediary eXchange (WRIX) Framework, developed by the WBA Roaming Work Group. This document defines the means by which operators may interconnect with each other, either directly or through their respective WRIX-is, for the purposes of providing wireless broadband roaming services to their end-users. It also provided a guidance for best practice of Wi-Fi Roaming and overview of WRIX interfaces and entities.