統(tong)(tong)一(yi)用(yong)(yong)(yong)(yong)戶認證系(xi)(xi)(xi)統(tong)(tong)，又名(ming)單點登(deng)(deng)(deng)錄(lu)系(xi)(xi)(xi)統(tong)(tong)（Single Sign-On , 簡稱 SSO ），SSO 系(xi)(xi)(xi)統(tong)(tong)使得(de)在多(duo)個(ge)(ge)應用(yong)(yong)(yong)(yong)系(xi)(xi)(xi)統(tong)(tong)中(zhong)，用(yong)(yong)(yong)(yong)戶只需要(yao)登(deng)(deng)(deng)錄(lu)一(yi)次(ci)就可以訪問所(suo)有(you)相(xiang)互信任的(de)(de)應用(yong)(yong)(yong)(yong)系(xi)(xi)(xi)統(tong)(tong)，用(yong)(yong)(yong)(yong)來解決跨應用(yong)(yong)(yong)(yong)系(xi)(xi)(xi)統(tong)(tong)的(de)(de)統(tong)(tong)一(yi)登(deng)(deng)(deng)入、統(tong)(tong)一(yi)登(deng)(deng)(deng)出等(deng)用(yong)(yong)(yong)(yong)戶認證工作。使得(de)在多(duo)個(ge)(ge)應用(yong)(yong)(yong)(yong)系(xi)(xi)(xi)統(tong)(tong)中(zhong)，用(yong)(yong)(yong)(yong)戶只需要(yao)登(deng)(deng)(deng)錄(lu)一(yi)次(ci)就可以訪問所(suo)有(you)相(xiang)互信任的(de)(de)應用(yong)(yong)(yong)(yong)系(xi)(xi)(xi)統(tong)(tong)，相(xiang)反(fan)也一(yi)樣，只要(yao)登(deng)(deng)(deng)出一(yi)次(ci)，就注銷(xiao)了所(suo)有(you)的(de)(de)應用(yong)(yong)(yong)(yong)系(xi)(xi)(xi)統(tong)(tong)，無需逐個(ge)(ge)注銷(xiao)。
