El Paso County, Colorado Information Technologies contracted with VESTRA to supply consulting services to assist with their GIS systems upgrade. The upgrade consisted of migrating from ArcGIS for Server v9.3.1 to ArcGIS for Server v10.3.x as well as a backend database migration from SQL Server to Oracle Exadata, configuring supported user authentication systems to work with Portal, Federating ArcGIS for Server sites with Portal, and configuring ArcGIS site as the hosting server for Portal for ArcGIS. The Counties architecture will also be upgraded and virtualized as part of this process.