Simple Service Discovery Protocol

A Simple Service Discovery Protocol is an expired IETF Internet draft that was co-authored by Hewlett Packard and Microsoft. Simple Service Discovery Protocol forms the basis of the Universal plug and play discovery protocol.

The Simple Service Discovery Protocol provides a method through which different network clients may uncover network services. Clients make use of Simple Service Discovery Protocol with very little static configuration – or none at all. Simple Service Discovery Protocol provides multi cast discovery support, discovery routing, as well as server based notification.

UDDI for Web Services

UDDI stands for Universal Description, Discovery, and Integration. It is an XML based, platform independent registry for businesses all over the world who would like to be listed on the World Wide Web.

Universal Description, Discovery, and Integration is an open industry initiative that is sponsored by OASIS. It enables companies to publish service listings while discovering one another, as well as defining the ways in which services and software applications interact over the World Wide Web.

A business registration through Universal Description, Discovery, and Integration consists of the following three components:

1. White Pages
2. Yellow Pages
3. Green Pages

Universal Description, Discovery, and Integration is regarded as one of the main standards of Web Services. Universal Description, Discovery, and Integration is designed to be interrogated by SOAP messages while simultaneously rendering access to Web Services Description Language documents that describe the message formats and protocol bindings that are necessary for interaction with web services listed in the directory.

Universal Description, Discovery, and Integration was composed in the year 2000 during a time when authors had a vision of a world in which consumers of Web Services would be linked up with providers through either a private or public dynamic brokerage system.

In such a vision, anyone who was in need of a service like credit card authentication could then go to their service broker and choose one supporting the desired SOAP or other service interface and meeting other criteria. In a world like that, the publicly operated Universal Description, Discovery, and Integration broker or node could be critical for everyone.

For the customer, open brokers would return services that were listed for public discovery by others. For the providers of services, the ability to get a good placement through a reliance on the metadata of authoritative index categories within the brokerage would be essential.

The Universal Description, Discovery, and Integration has been integrated in to the Web Services Interoperability standard as a central component of the infrastructure of web services. By the year 2006, it was on the agenda to be utilized by over seventy percent of the Fortune 500 businesses in either a private or public implementation – especially among those businesses that were looking to optimize the reuse of services or software.

A lot of those businesses subscribe to some type of service oriented architecture, server programs, or database software that is licensed by some of the main founders of OASIS and UDDI.org.

The Universal Description, Discovery, and Integration specifications supported a Universal Business Registry that was accessible by the general public. Such a registry was based on a naming system that was built around a Universal Description, Discovery, and Integration driven service broker.

In early 2006, it was announced by Microsoft, SAP, and IBM that they would be closing their public Universal Description, Discovery, and Integration nodes.

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