Google Premium/Enterprise vs. Google Earth Professional License
A "Google Premium/Enterprise" is not the same as a Google Earth
The "Google Premium/Enterprise" allows usage of the Google
Products, API's and Mapping Layers on websites and internal use.
A Google Earth Professional license only allows you to use
Professional Application in a commercial environment.
Arc2Earth is an OEM partner with Google and we include Google Maps API as a part of our data services.
Arc2Earth does not require an Google Earth Pro licenses unless your organization requires one.