sblty cn b dscrbd s th cpcty f systm t prvd cndtn fr ts srs t prfrm th tsks sfly, ffctvly, nd ffcntly whl njyng th xprnc. n sftwr ngnrng, sblty s th dgr t whch sftwr cn b sd by spcfd cnsmrs t chv qntfd bjctvs wth ffctvnss, ffcncy, nd stsfctn n qntfd cntxt f s.
Th bjct f s cn b sftwr pplctn, wbst, bk, tl, mchn, prcss, vhcl, r nythng hmn ntrcts wth. sblty stdy my b cndctd s prmry jb fnctn by sblty nlyst r s scndry jb fnctn by dsgnrs, tchncl wrtrs, mrktng prsnnl, nd thrs. t s wdly sd n cnsmr lctrncs, cmmnctn, nd knwldg trnsfr bjcts (sch s ckbk, dcmnt r nln hlp) nd mchncl bjcts sch s dr hndl r hmmr.
sblty nclds mthds f msrng sblty, sch s nds nlyss nd th stdy f th prncpls bhnd n bjct's prcvd ffcncy r lgnc. n hmn-cmptr ntrctn nd cmptr scnc, sblty stds th lgnc nd clrty wth whch th ntrctn wth cmptr prgrm r wb st (wb sblty) s dsgnd. sblty cnsdrs sr stsfctn nd tlty s qlty cmpnnts, nd ms t mprv sr xprnc thrgh trtv dsgn.