Changes

 ArcGIS Desktop is a proprietary and full featured desktop GIS package produced by ESRI (http://www.esri.com). In addition to the core software there are various service packs, SDKs, extensions and plugins that you may need to include in your deployment. Fortunately enterprise deployment is described in detail in this white paper:(http://www.esri.com/library/whitepapers/pdfs/arcgis10-enterprise-deployment.pdf)