sr xprnc dsgn (X dsgn, XD, D, r XD), pn whch s th cntrlzd rqrmnts fr "sr xprnc Dsgn Rsrch" (ls knwn s X Dsgn Rsrch), dfns th xprnc sr wld g thrgh whn ntrctng wth cmpny, ts srvcs, nd ts prdcts. sr xprnc dsgn s sr cntrd dsgn pprch bcs t cnsdrs th sr's xprnc whn sng prdct r pltfrm. Rsrch, dt nlyss, nd tst rslts drv dsgn dcsns n X dsgn rthr thn sthtc prfrncs nd pnns, fr whch s knwn s X Dsgn Rsrch. nlk sr ntrfc dsgn, whch fcss slly n th dsgn f cmptr ntrfc, X dsgn ncmpsss ll spcts f sr's prcvd xprnc wth prdct r wbst, sch s ts sblty, sflnss, dsrblty, brnd prcptn, nd vrll prfrmnc. X dsgn s ls n lmnt f th cstmr xprnc (CX), nd ncmpsss ll dsgn spcts nd dsgn stgs tht r rnd cstmr's xprnc.