ric " ▁scenarios , ▁as ▁well ▁as ▁enter prise - control led ▁or ▁business - to - bus iness ▁scenarios . ▁ ▁Federation ▁is ▁enabled ▁through ▁the ▁use ▁of ▁open ▁industry ▁standards ▁and / or ▁open ly ▁published ▁specific ations , ▁such ▁that ▁multiple ▁parties ▁can ▁achieve ▁inter oper ability ▁for ▁common ▁use - cases . ▁Typ ical ▁use - cases ▁involve ▁things ▁such ▁as ▁cross - domain , ▁web - based ▁single ▁sign - on , ▁cross - domain ▁user ▁account ▁provision ing , ▁cross - domain ▁ent it lement ▁management ▁and ▁cross - domain ▁user ▁attribute ▁exchange . ▁ ▁Use ▁of ▁identity ▁feder ation ▁standards ▁can ▁reduce ▁cost ▁by ▁elimin ating ▁the ▁need ▁to ▁scale ▁one - off ▁or ▁propriet ary ▁solutions . ▁It ▁can ▁increase ▁security ▁and ▁lower ▁risk ▁by ▁en abling ▁an ▁organization ▁to ▁identify ▁and ▁authentic ate ▁a ▁user ▁once , ▁and ▁then ▁use ▁that ▁identity ▁information ▁across ▁multiple ▁systems , ▁including ▁external ▁partner ▁websites . ▁It ▁can ▁improve ▁priv acy ▁comp liance ▁by ▁allowing ▁the ▁user ▁to ▁control ▁what ▁information ▁is ▁shared , ▁or ▁by ▁limit ing ▁the ▁amount ▁of ▁information ▁shared . ▁And ▁last ly , ▁it ▁can ▁dr ast ically ▁improve ▁the ▁end - user ▁experience ▁by ▁elimin ating ▁the ▁need ▁for ▁new ▁account ▁registration ▁through ▁automatic ▁" f eder ated ▁provision ing " ▁or ▁the ▁need ▁to ▁redund antly ▁login ▁through ▁cross - domain ▁single ▁sign - on . ▁ ▁The ▁notion ▁of ▁identity ▁feder ation ▁is ▁extremely ▁broad , ▁and ▁also ▁evol ving