IProtokholi yeMiyalezo eYandisiweyo kunye noBukho (i-XMPP, ebizwa ngokuba yiJabber) yinkqubo yonxibelelwano evulekileyo eyenzelwe ukuthumela umyalezo okhawulezileyo (IM), ulwazi lobukho, kunye nokugcinwa koluhlu lwabafowunelwa. Ngokusekwe kwi-XML (uLwimi lweMarkup oloNgezelelweyo), ivumela utshintshiselwano olusondeleyo lwexesha lokwenyani lwedatha ecwangcisiweyo phakathi kwazo naziphi na izigqeba ezimbini okanye ngaphezulu zenethiwekhi. Idizayinelwe ukuba yandiswe, iprotocol inikezela ngobuninzi bezicelo ngaphaya kwe-IM yendabuko kwindawo ebanzi ye-middleware ejoliswe kumyalezo, kubandakanywa ukubonakaliswa kweVoIP, ividiyo, ukuhanjiswa kwefayile, imidlalo kunye nokunye ukusetyenziswa.