This is a short, but hopefully sweet post for someone, whom, like me, might have had to end up spending a few hours trying to find the Report Server URL for SSRS 2012 (or newer) SharePoint integrated Mode. I found it in Microsoft documentation, but I don’t remember where, so here it is again:
http(s)://<top level site>/_vti_bin/reportserver
The key to this extremely cryptic puzzle was to add the “/_vti_bin”. Not easy to find if you are hunting online.