I am currently writing from a stage where our admin installed the gateway and share it with me. I haven't yet used it in a canvas app yet and am still collecting my thoughts and questions.
Is there some sort of full documentation of that On-Premises Data Gateway? The documentation I found via google seems to be incomplete and consist either of just a few pages of docs.microsoft.com/forum/blog entries. None of that looked like it was supposed to be a reference.
The data gateway only cares about the underlying SQL Datasource, i.e. the Dynamics version doesn't matter as long as the Microsoft SQL Server is the same, right? At least the Docs that I found seem to mention Dynamics almost nowhere, in particular now among the Data Source content.
Do I have to do something special because of the IFD/ADFS deployment? I couldn't find anything tangible on that.
The description of how the On-premises data gateway works suggests that there will be traffic using the Azure Service Bus. Do I need a Azure Service Bus Namespace/subscription to connect PowerApps Canvas App to the On-Premise Dynamics installation?
Am I interpreting this configuration page for a SQL connection via the On-Premises Data Gateway correct in saying the following: Each connection using the SQL Server connector is bound to one fixed username. Using those connections it is not possible to have multiple users use one single PowerApp (with one SQL Server connection) but different login credentials on the On-Premise SQL server.
Is there another connector which allows different On-Premise-user-credentials for different PowerApps-Users?