cntnt dlvry ntwrk r cntnt dstrbtn ntwrk (CDN) s ggrphclly dstrbtd ntwrk f prxy srvrs nd thr dt cntrs. Th gl s t prvd hgh vlblty nd prfrmnc ("spd") by dstrbtng th srvc sptlly rltv t nd srs. CDNs cm nt xstnc n th lt 1990s s mns fr llvtng th prfrmnc bttlncks f th ntrnt s th ntrnt ws strtng t bcm mssn-crtcl mdm fr ppl nd ntrprss. Snc thn, CDNs hv grwn t srv lrg prtn f th ntrnt cntnt tdy, ncldng wb bjcts (txt, grphcs nd scrpts), dwnldbl bjcts (md fls, sftwr, dcmnts), pplctns (-cmmrc, prtls), lv strmng md, n-dmnd strmng md, nd scl md sts.
CDNs r lyr n th ntrnt csystm. Cntnt wnrs sch s md cmpns nd -cmmrc vndrs py CDN prtrs t dlvr thr cntnt t thr nd srs. n trn, CDN pys ntrnt srvc prvdrs (SPs), crrrs, nd ntwrk prtrs fr hstng ts srvrs n thr dt cntrs.
CDN s n mbrll trm spnnng dffrnt typs f cntnt dlvry srvcs: vd strmng, sftwr dwnlds, wb nd mbl cntnt cclrtn, lcnsd/mngd CDN, trnsprnt cchng, nd srvcs t msr CDN prfrmnc, ld blncng, Mlt CDN swtchng nd nlytcs nd cld ntllgnc. CDN vndrs my crss vr nt thr ndstrs lk scrty, DDS prtctn nd wb pplctn frwlls (WF), nd WN ptmztn.
Ntbl cntnt dlvry srvc prvdrs ncld km Tchnlgs, dg, Cldflr, mzn CldFrnt, Fstly, nd Ggl Cld CDN.