Java Developer

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Submitted By rindha
Words 6450
Pages 26
Estimating the Costs of a Reengineering Project
Harry M. Sneed
Anecon GmbH, Vienna Austria
Institut für Wirtschaftsinformatik, University of Regensburg, Bavaria
Email: Harry.Sneed@T-Online.de
Abstract: Accurate estimation of project costs is an essential prerequisite to making a reengineering project. Existing systems are usually reengineered because it is cheaper to reengineer them than to redevelop or to replace them. However, to make this decision, management must know what the reengineering will cost. This contribution describes an eight step tool supported process for calculating the time and the costs required to reengineer an existing system. The process is derived from the author’s 20 year experience in estimating reengineering projects and has been validated by several real life field experiments in which it has been refined and calibrated.
Keywords: Reengineering, cost estimation, risk analysis, software measurement, gap analysis.
It has been 15 years since the first studies on the economics of software reengineering projects appeared and since then a great deal of research has been done and a wide range of practical experience gathered.[1] At that time, reengineering projects were being calculated on the basis of the size alone, without consideration of complexity and quality. In the meantime, we have learned a lot more about how the complexity and quality of the software effect reengineering costs. The topic of estimating the costs of a reengineering project has also become more important to decision makers in industry since they have other alternatives to choose from.
Reengineering is an alternative to redevelopment, to purchasing a standard package or to doing nothing at all. Therefore, management wants to know, what the return on investment is for each alternative.
Without having a cost estimation it is not…...

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