SQL 2016 SSRS has some really nice mobile report options and KPI reporting options that can make a nice dashboard of charts and graphs for executives.
*IF* you do not need the interactive view and you want a report retuned you can call the report server api to render a pdf directly if you want that.
i have a web api call that calls ssrs and returns a pdf to my front end, if you want some info on how to do that with 2016 i can help you out.
also i think the interactive ui can be accessed with a bit of work w/o the asp.net server controll.
the asp.net server controll mostly calls back to the soap api to do the work.