Mir_AppDev - ISM 4300 ISM 4300 Managing Applications...

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Unformatted text preview: ISM 4300 ISM 4300 Managing Applications Development Value of ITApplications IT applications have business, strategic, and tactical value to the firm. Thus critical success factors and managing application development are tightly coupled. Goals of Application Development produce applications on schedule, within budget, having functions required by using organizations. the objective of developers is to be effective, efficient in producing quality products. What is Application Portfolio Management? Selection and prioritization Support of corporate objectives Optimization of IT investment Evaluation Monitoring Application Program Resources Most firms have a thousand or more application programs Their number is growing; size and complexity is increasing Applications are supported by many large data stores Applications and data represent a very large investment Maintenance and Enhancement These costs are rising because of rising labor rates No major cost breakthroughs are anticipated There are no easy migrations from old to new programs Application Data Resources Databases and database management systems are large resources Databases may also be depreciating or becoming obsolete Some are coupled to applications, complicating maintenance Some databases may be geographically dispersed Databases are vulnerable to loss or damage Why the Backlog? Resources to forestall effects of depreciation are large Most firms cannot program their way through this problem Spending more on local programmers usually doesn't help Thus, the workload is building in some firms Some work is not identified; this is the invisible backlog Enhancement & Maintenance Considerations Businesses have a huge investment in 3rd generation code Software is much more difficult to upgrade than hardware Insufficient resources to eliminate the backlog Must manage strategic resources thoughtfully High Cost of Enhancements Obsolete programming techniques were used Documentation is obsolete or absent Many programmers made modifications Many uncoordinated modifications Old versions of languages were used Languages were mixed within the program Unskilled programmers made enhancements Architecture changes are required File structures need major changes Trends in Application Management Expenditures on maintenance and enhancement are rising This means fewer resources for new development The maintenance process is a source of difficulty too This frequently leads to default management processes These reactive processes are popular, but unsatisfactory Challenges of Application Development Nearly all organizations experience development trauma Today's programs are large, complex, and hard to measure Most firms have inadequate tools and management systems Managers' expectations of program developers are rising Reasons for Development...
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This note was uploaded on 07/31/2011 for the course ISM 4300 taught by Professor Staff during the Fall '08 term at University of South Florida - Tampa.

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Mir_AppDev - ISM 4300 ISM 4300 Managing Applications...

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