Conclusion
Major crises such as the so-called millennium bug[3] have the effect of raising the profile of the problem of supporting old systems. However, most organizations ignore the issue of their investment in production systems.
[3] Purists argue that the millennium bug is not a bug, but rather an adaptive maintenance issue. We agree with them.
Apart from raising the profile of support work, the production system portfolio model is vital in enabling life-cycle management of information systems. Without clear tracking and reporting of information system support costs, there is no way for effective cost–benefit approaches to be implemented.
For example, a new system estimated at $100,000 for development and $100,000 for support with $300,000 ...
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