Definition: XRDS

(EXtensible Resource Descriptor Sequence) An XML-based document that is the authoritative source of data about a registered i-name. On behalf of XDI.org, the XRDS location is maintained by .us domain registrar NeuStar, Inc. The XRDS, which contains the i-name, i-number and URLs to all services associated with that i-name, is updated through an i-broker. See xri.net, i-broker, i-name and XRI.