Ukukhethwa kobuninzi kubaluleke kakhulu kuyo yonke inkqubo yokwenza ukubumba.
Iimfuno zoyilo lobumba kunye nemveliso zezi: ubungakanani obuchanekileyo, umphezulu othe tyaba; Isakhiwo esifanelekileyo, ukulunga okuphezulu kwemveliso, kulula ukuzenzela; kulula ukuyenza, ubomi obuphezulu, iindleko eziphantsi; uyilo luhlangabezana neemfuno zenkqubo, ezoqoqosho kunye nezivakalayo.
Uyilo linyathelo eliphambili ekuqulunqweni kobumba, inyathelo lokuqala lemveliso, kwaye lilawula yonke inkqubo yokuvelisa. Ke, uyilo nalo lunempembelelo enkulu kubomi benkonzo yokubumba. Uyilo luchaphazela ikakhulu inkonzo yenkonzo yokubumba isitampu ukusuka kwezi zinto zimbini zilandelayo.
Kuba ukusweleka kokubumba okuhlukeneyo kufakwe kumacandelo amaninzi, kwaye itekhnoloji yokuvelisa yobuchwephesha bafa ikwenzile notshintsho oluthile kule minyaka, kule nxalenye, imithetho yoyilo ngokubanzi yokufakelwa kwamachaphaza e-blist iyashwankathelwa.