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Slide 1 Enterprise Architecture Copyright Wyyzzk Inc 2004 Version 5 0 Slide 2 Lesson Goal Objectives Understand the purpose and nature of enterprise architecture Upon completion of the lesson the participant will be able to Describe architecture patterns at the enterprise level Identify constraints and issues at the enterprise level Copyright Wyyzzk Inc 2004 Version 5 0 Enterprise Architecture 2 Slide 3 Lesson Outline Enterprise Architecture What is enterprise architecture Patterns at the enterprise level Constraints and Issues Impact on Project Architecture Copyright Wyyzzk Inc 2004 Version 5 0 Enterprise Architecture 3 Slide 4 Enterprise Architecture An enterprise architecture concerns the hardware and software systems applications and data and their relationships across the whole enterprise This may or may not be formally described DB2 Server Web Server Apache Client Record Copyright Wyyzzk Inc 2004 Version 5 0 JDB Agency Client Firefox Agent Interface Enterprise Architecture 4 It is seldom that an enterprise architecture is planned More often it develops over time as systems and software are purchased and connected for individual products Places like Safeway retail grocer banks insurance companies and investment companies have been purchasing systems and software for decades usually without an overall plan One recent exception is WalMart This is a relatively new company founded after computers were in common use in retail So the enterprise architecture was planned not long after the company was founded At some point a company may decide to document the existing enterprise architecture then make changes to enforce standards or comply with regulatory requirements Because this is very expensive to do the usual approach is to work on it one project at a time each project team adds to the enterprise architecture the part they are using for their project An enterprise is typically a whole company or a whole division of a company For example Safeway IT is an enterprise



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