Web Registry Service
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The Web Registry Service is a software component that supports the run-time discovery and evaluation of resources such as services, datasets, and application schemes. [1]
See also:
Open Geospatial Consortium (OGC)
Web Catalog Service (CAT)
Web Coverage Service (WCS)
Web Feature Service (WFS)
Web Mapping Service (WMS)
Web Services Definition Language (WSDL)
Web Service Flow Language (WSFL)