There is only one file type that uses the .MSD extension:
Map Service Definition File
Published map file created by ArcGIS Desktop, a software suite used to create maps and process geospatial data; contains a map that has been published from an .MXD map document; created for ArcGIS Server, which hosts the map for real-time viewing over a network.
Software's name | License | Platforms |
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Commercial | ![]() |
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Paid | ![]() |
Updated: January 24, 2011