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.