Reasoning about the E in EA Version 1 Jörgen Dahlberg [email_address] http://enklare.wordpress.org

Definitions of EA Gartner Research , defines EA as “the process of describing, and the description of, the desired future state of an organization's business process, technology and information to best support the organization's business strategy” US Chief Architects Forum , defines EA as “a management tool for improving an organization’s performance by optimizing how it uses its resources” Jeanne W. Ross, Peter Weill, David C. Robertson , defines EA as “the enterprise architecture is the organizing logic for business processes and IT infrastructure, reflecting the integration and standardization requirements of the company's operating model”

Two kinds of models Model for reasoning Model for documentation

Sarbanes Oxley Model for documentation Documentation Process Procedures Technology

Togaf Data Application Business Model for documentation Technology

Classic EA Vision Model for documentation Objective Goal Strategy Business process Information system Data Mission

Two models in between Zachman LEA

Other models #4 Zachman Enterprise Product Model for reasoning Who When Why What How Where

Other models #5 LEA Enterprise Product Model for reasoning Who Where When Why What How Business logic Information substance Process People Location Workplan

Three areas of reasoning Business model Technology Market

Focus on the business model Customer segment Model for reasoning Value proposition Customer relationship Distribution channel Revenue streams Partner network Activities & resources Cost structure Key issues to solve

Focus on the market Bargain power of suppliers Threat of substitute products Bargain power of customers Model for reasoning Threat of new entrants Competitive rivalry within an industry

Focus on technology Storage Process Connectivity Access Computing Model for reasoning