interface, and meeting other criteria. In such a world, the publicly operated UDDI node or broker would be critical for everyone. For the consumer, public or open brokers would only return services listed for public discovery by others, while for a service producer, getting a good placement in the brokerage—by relying on metadata of authoritative index categories—would be critical for effective placement. UDDI was included in the Web Services Interoperability (WS-I) standard as a central pillar of web services infrastructure, and the UDDI specifications supported a publicly accessible Universal Business Registry in which a naming system was built around the UDDI-driven service broker. UDDI has not been as widely adopted as its designers had hoped. IBM, Microsoft, and SAP announced they were closing their public UDDI nodes in January 2006. The group defining UDDI, the OASIS Universal Description, Discovery, and Integration (UDDI) Specification Technical Committee voted to complete its work in late 2007 and has been closed. In September 2010, Microsoft announced they were removing UDDI services from future versions of the Windows Server operating system. Instead, this capability would be moved to BizTalk Server. In 2013, Microsoft further announced the deprecation of UDDI Services in BizTalk Server. In 2016, Microsoft removed UDDI Services from BizTalk Server. UDDI systems are most commonly found inside companies, where they are used to dynamically bind client systems to implementations. However, much of the search metadata permitted in UDDI is not used for this relatively simple role. Structure of UDDI A UDDI business registration consists of three components: White Pages — address, contact, and known identifiers; Yellow Pages — industrial categorizations based on standard taxonomies; Green Pages — technical information about services exposed by the business. White Pages White pages give information about the business supplying the service. This includes the name of the business and a description of the business - potentially in multiple languages. Using this information, it is possible to find a service about which some information is already known (for example, locating a service based on the provider's name). Contact information for the business is also provided - for example the businesses address and phone number; and other information such as the Dun & Bradstreet. Yellow Pages Yellow pages provide a classification of the service or business, based on standard taxonomies. These include the Standard Industrial Classification (SIC), the North American Industry Classification System (NAICS), or the United Nations Standard