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Demonstration Overview. Infrastructure requirementsWeb Mapping Service elementsCapabilitiesFuture possibilities. Principles. Today's demo illustrates the service of maps from multiple servers to a single web browser window where data can be viewed together.Such multi-server interfaces can be im
                
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1. Demonstration of OGC Web Mapping Services Doug Nebert
FGDC/GSDI Secretariat 
2. Demonstration Overview Infrastructure requirements
Web Mapping Service elements
Capabilities
Future possibilities 
3. Principles Todays demo illustrates the service of maps from multiple servers to a single web browser window where data can be viewed together.
Such multi-server interfaces can be implemented within an organization, across multiple agencies, or to a full public audience. 
4. OGC Web Mapping Services This demonstration shows only the use of the OGC Web Mapping Service Specification 1.0  a simple map service
Several OGC members including ESRI, MapInfo, AutoDesk, and Intergraph provide WMS-compliant solutions for map service that have additional service capabilities
Open-source software also exists for experimentation and small-scale service 
5. OGC Web Map Specification getCapabilities  retrieves the map server information including layer names, styles, and projections supported
getMap  requests a picture of a certain size and format to the client (JPEG, GIF, PNG)
getFeatureInfo  allows query of feature behind map server and returns attributes to client  
6. Demo Environment