We have 1000s of SSRS 2005 reports in native SSRS mode and about 300 hosted inside SharePoint 2007 in SP integrated mode.
As we consider moving to SPO 2013 (o365) SSRS is not offered with SPO, and even if it was our data sources are on-Prem local behind a firewall.
This is a high level question looking for that possible/probably/unlikely or never answer.
Do we see the possibility of seemlessly rendering SSRS Native On-prem hosted SSRS 2005/2008/2012 reports from inside an SPO webpart or page authenticated and secured to an ADFS user without being prompted for authentication by SSRS? If so, how could this work?