COTS-Based Systems (CBS) Functional Density—A Heuristic for Better CBS Design

  • Chris Abts
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2255)

Abstract

The conventional rationale for using COTS (commercial off-the-shelf) components is that the more a software system is built from COTS products, the lower the cost of initial development. Less understood is that during the long term sustainment phase—from deployment through retirement—the cost of maintenance of a COTS-based system generally increases as the number of COTS products used increases. There exists then a tension between the imperative to maximize the use of COTS components to ease CBS development yet minimize the use of COTS components to ease CBS maintenance. A heuristic called the “CBS Functional Density Rule” is proposed to reconcile these two conflicting views. A corresponding metric for characterizing the “efficiency” of a given CBS design relative to another called the “COTS Functional Density” is then suggested. The paper concludes with suggestions for additional research to further validate the empirical foundations of the proposed heuristic and associated metric.

Keywords

Function Point System Functionality Life Cycle Cost Software Cost Estimation Equilibrium Threshold 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2002

Authors and Affiliations

  • Chris Abts
    • 1
  1. 1.University of Southern CaliforniaLos AngelesUSA

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