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...Www objectmentor com design principles and patterns robert c martin what is software architecture the answer multitiered at highest level there are that define overall shape structure of applications down a specifically related to pur pose application yet another resides modules their interconnections this domain pack akges components classes it we will concern ourselves with in chapter our scope quite limitted much more be said about exposed here interested readers referred dependencies goes wrong many begins as vital image minds its designers stage clean elegant pelling has simple beauty makes implementers itch see working some these manage maintain purity through initial development into first release but then something happen starts rot isn t so bad an ugly wart clumsy hack still shows over time rotting continues festering sores boils accumulate until they dominate program becomes mass code developers find increasingly hard eventu copyright by all rights reserved ally sheer effort ...