Is there a way in the SDK or within ESRI to be able to authenticate private URL's? We have a client that needs the data to remain private and I don't see a way of authorizing it in the Unreal Engine SDK.
Yes, you can work with private / secured ArcGIS content and services in the Maps SDK for Unreal Engine via OAuth 2.0, and if only using ArcGIS Platform location services or ArcGIS Online then you can also use API Keys.
