O365 federation

http://blogs.technet.com/b/compilations/archive/2014/04/15/office-365-single-sign-on-with-adfs-roadmap-design-implementation-adfs-high-availability-amp-the-choice-of-configuration-database-type-for-redundancy-steps-amp-faqs.aspx#.VSuvTvmsVqU

https://sfspug.files.wordpress.com/2013/11/office-365-single-sign-on-with-adfs.pptx


http://blogs.technet.com/b/rmilne/archive/2014/04/28/how-to-install-adfs-2012-r2-for-office-365.aspx


https://www.youtube.com/watch?v=GHMaQjAS0qo

https://technet.microsoft.com/en-us/library/jj710171.aspx