Autodesk Infrastructure Map Server has two FDO providers to connect to web services. Web services are becoming increasingly popular as a way of bringing commonly-used spatial data into a map. The two types of supported web services are WFS (Web Feature Service), and WMS (Web Map Service). Both of these are standards developed and maintained by the Open Geospatial Consortium (OGC).
The WFS provider allows you to connect to servers offering feature (vector-based) data, such as political boundaries or transportation networks.
The WMS provider allows you to connect to servers or websites offering raster data, such as satellite photographs or scanned topo maps.