Th Wrld Wd Wb (WWW r smply th Wb) s n nfrmtn systm tht nbls cntnt shrng vr th ntrnt thrgh sr-frndly wys mnt t ppl t srs bynd T spclsts nd hbbysts. t llws dcmnts nd thr wb rsrcs t b ccssd vr th ntrnt ccrdng t spcfc rls f th Hyprtxt Trnsfr Prtcl (HTTP).
Th Wb ws nvntd by nglsh cmptr scntst Tm Brnrs-L whl t CRN n 1989 nd pnd t th pblc n 1991. t ws cncvd s "nvrsl lnkd nfrmtn systm". Dcmnts nd thr md cntnt r md vlbl t th ntwrk thrgh wb srvrs nd cn b ccssd by prgrms sch s wb brwsrs. Srvrs nd rsrcs n th Wrld Wd Wb r dntfd nd lctd thrgh chrctr strngs clld nfrm rsrc lctrs (RLs).
Th rgnl nd stll vry cmmn dcmnt typ s wb pg frmttd n Hyprtxt Mrkp Lngg (HTML). Ths mrkp lngg spprts pln txt, mgs, mbddd vd nd d cntnts, nd scrpts (shrt prgrms) tht mplmnt cmplx sr ntrctn. Th HTML lngg ls spprts hyprlnks (mbddd RLs) whch prvd mmdt ccss t thr wb rsrcs. Wb nvgtn, r wb srfng, s th cmmn prctc f fllwng sch hyprlnks crss mltpl wbsts. Wb pplctns r wb pgs tht fnctn s pplctn sftwr. Th nfrmtn n th Wb s trnsfrrd crss th ntrnt sng HTTP. Mltpl wb rsrcs wth cmmn thm nd slly cmmn dmn nm mk p wbst. sngl wb srvr my prvd mltpl wbsts, whl sm wbsts, spclly th mst pplr ns, my b prvdd by mltpl srvrs. Wbst cntnt s prvdd by myrd f cmpns, rgnztns, gvrnmnt gncs, nd ndvdl srs; nd cmprss n nrms mnt f dctnl, ntrtnmnt, cmmrcl, nd gvrnmnt nfrmtn.
Th Wb hs bcm th wrld's dmnnt nfrmtn systms pltfrm. t s th prmry tl tht bllns f ppl wrldwd s t ntrct wth th ntrnt.