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Trends in the evolution of business IS/IT

Aspects. ‘ Era ’. DP. MIS. SIS. Nature of the technology. ‘ Computers ’ fragmented (hardware limitation. ‘ Distributed process ’ interconnected software limitation. ‘ Networks ’ integrated people/vision limitation ). Nature of operations. Remote from users controlled by DP.

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Trends in the evolution of business IS/IT

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  1. Aspects ‘Era’ DP MIS SIS Nature of the technology ‘Computers’ fragmented (hardware limitation ‘Distributed process’ interconnected software limitation ‘Networks’ integrated people/vision limitation) Nature of operations Remote from users controlled by DP Regulated by management services Available and supportive to users Issues in systems development Technical issues (programming/ project management) Support business user’s needs (information management) Relate to business strategy ? Reason for using the technology Reducing costs (especially administrative) – technology driven Supporting the business (manager) – user driven Enabling the business – business driven Characteristics of systems Regimented/ operational (internal) Accommodating/ control Flexible/ strategic ? (external) Trends in the evolution of business IS/IT

  2. The business / systems portfolio matrix

  3. Mapping the evolution of ISP on the application portfolio model Stage 5 Stage 4 Stage 3 Stage 2 Stage 1 資料來源：M. J. Earl (1989)

  4. Five-stage ISP model Increasing organisational maturity with respect to IS/IT planning 1 2 3 4 5 IS/IT application mapping Defining business needs Detailed IS planning Strategic/ competitive advantage Linkage to business strategy MAIN TASK Management under- standing Agreeing priorities Balancing the portfolio Pursuing opportunities Integrating IS and business strategies KEY OBJECTIVE DP/IS led Senior management initiative Users and IS together Executives/ senior management and Users Coalition of users/ management and IS DIRECTION FROM Bottom-up development Top down analysis Balanced top down and bottom-up Entre- preneurial (user innovation) Multiple method at same time MAIN APPROACH 資料來源：M. J. Earl (1989)

  5. Critical issues in managing segments of the portfolio Very high risk High risk STRATEGIC HIGH POTENTIAL Known risk FACTORY SUPPORT Low risk

  6. The application portfolio – Management style

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