Report Server in .Net Core 2 Web Application

[dt_mc]

Hi - 

we have published our PBIX files to our Report Server and are accessing it via an iframe in our web application.  its working fine for a proof of concept, but dealing with iframe visual sizing and permissions is problematic.  Each user would need access to the server via the method we are doing.

I was reading about SOAP and it looks like that is an option. 

Just wanted to confirm that each user wouldn't need a Power BI license and we would be able to impersonate some service account to talk to the server to display the report?  

Anyone do this in and able to lend insights into headaches they experienced?  

Anyone do it in .Net Core and able to speak to how they did the display?  Doesn't look like Report Toolbar is available.  Just used an iframe?