Summary
Discovery is the process of finding instances of Web services. Unlike previous distributed architectures, the Web service architecture has a composable, yet very flexible, discovery design. There are two important specifications that deal with discovery: UDDI and WS-Inspection.
UDDI is a directory of Web services and related information. UDDI allows developers to register and query services based on custom taxonomies. WS-Inspection is a file format for describing a list of Web services and interesting information about them. WS-Inspection documents are typically stored and queried for at the point of a service's, or set of services', offerings.
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