ESRI has launched a new plug-in application for AutoCAD(v2013 or 2014) that allows for you to access and create GIS data via services from ArcGIS for Server and ArcGIS Online. From within the domain, access to GIS maps, map services, image services, and feature services are now made MUCH easier.
An additional selling point of the software, it allows you to edit data that’s been stored locally within the AutoCAD drawing itself or exported from ArcGIS for Desktop.
Both ESRI Desktop software and all Autodesk software are using the FLEXnet publisher for licensing. This allows sites that use both software to fully control and manage the access to licenses by using OpenLM Software.
Download ArcGIS for AutoCAD HERE
Download OpenLM HERE