Your user role can affect how you work with feature layers.
Publicly shared content
In ArcGIS for AutoCAD, you can access public content from ArcGIS Enterprise and ArcGIS Online as well as make a direct connection to web services and edit feature layers on nonfederated enterprise servers without an Esri named user subscription.
Portal-managed and subscription content
An Esri named user license allows you to access an organization's content that the named user owns, is shared with a group the named user is a member of, and supported content shared to the entire organization. The editing privileges are set for layers with feature access enabled based on the parent service within the organization. To edit web feature layers in an organization, you must have an editor or higher named user license. To access web feature layers belonging to an organization as read-only to a drawing, a viewer named user license is sufficient. Publicly shared data does not require an Esri named user.
Esri-curated subscription content is only available to Esri named users, and premium content requires a viewer or higher user type with credit usage privileges and a sufficient balance of credits.
There are currently no workflows in ArcGIS for AutoCAD that require a user type higher than editor.
Free download
There is no additional licensing fee for ArcGIS for AutoCAD software. Accessing and using maps, imagery, and feature layers conform to the standard Esri policies for accessing content managed in ArcGIS Online and an Enterprise portal.