The Web Mapping Testbed Phase 2 (WMT-2) expanded on work done in WMT-1. It resulted in more federal data coming on-line using WMT protocols and laid a foundation for OGC Pilot Projects that tested and demonstrated the new capabilities. WMT-2 resulted in improvements to GetFeatureInfo, GetMap, and GetCapabilities, the basic elements of the Web Map Server Interface Specification. It also resulted in a proposed service interface specification for accepting multi-dimensional query requests and responding with portrayals (symbolized graphics) of the results (with associated legends). New draft OpenGIS Specifications for the following also resulted:
-- OpenGIS Web Feature Server Specification, a service interface specification for accepting spatially enabled SQL-like query requests and responding with Geography Markup Language (GML) feature collections. (GML, developed during WMT-1, is OGC's standard system for XML encoding of geographic features.)
-- An OpenGIS Filter Encoding Specification, that is, an encoding specification for spatially enabled SQL-like filter grammar.
-- OpenGIS Web Coverage Service Specification, for accepting multi-dimensional query requests and responding with gridded data values (coverages).
-- Imagery Markup Language (IML): An XML encoding standard for images, gridded data, and textual and graphical annotations on imagery and maps.
-- General Services Model: Encoding specification for representing services metadata, service capabilities and service interfaces using XML
-- OpenGIS Styled Layer Descriptor: An XML encoding specification for associating cartographic symbols with properties of features.
-- OpenGIS Feature Identifier Specification: This enables applications to identify a feature in one map as being the same feature represented in a map from another source on the Web.