Does COCOMO II replace traditional COCOMO?
You should use COCOMO II for most of your new projects. COCOMO 81 is still the best approach for some software projects. If you’re using a fairly traditional approach, and using a 3GL (third generation language), such as C, Fortran, or Cobol, the original COCOMO will give you good results. If your development tools and processes haven’t changed much in recent years, COCOMO 81 might be the right model for you. If you’re using more modern tools, a new development process model, a 4GL language, or tools like Visual Basic, Delphi, or Power Builder, you might find that COCOMO II makes more sense. When in doubt, try to model your project using both the traditional COCOMO and COCOMO II.