Web Services Dynamic Discovery (WS-Discovery) is a technical specification that defines a multicast discovery protocol to locate services on a local network. As the name suggests, the actual communication between nodes is done using web services standards, notably SOAP-over-UDP.
The protocol was originally developed by BEA Systems, Canon, Intel, Microsoft, and WebMethods. It has later been approved as a standard by OASIS (as of July 1st 2009[1]).
Various components in Microsoft's Windows Vista operating system use WS-Discovery, e.g. "People near me". WS-Discovery is an integral part of Windows Rally technologies and Devices Profile for Web Services.
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