n sftwr dvlpmnt, frntnd rfrs t th prsnttn lyr tht srs ntrct wth, whl bcknd nvlvs th dt mngmnt nd prcssng bhnd th scns. n th clnt–srvr mdl, th clnt s slly cnsdrd th frntnd, hndlng sr-fcng tsks, nd th srvr s th bcknd, mngng dt nd lgc. Sm prsnttn tsks my ls b prfrmd by th srvr.