A Comparative Study of Model Content and Parameter Sensitivity of Software Support Cost Models

Abstract Software support costs frequently account for about seventy percent of software life cycle costs. This is because software support involves more than corrective support, or error correction (sometimes called “maintenance”). Software support also includes adaptive support, which includes modifying software for a new operating system or database, and perfective support, which includes enhancing the software's performance or capabilities. Unfortunately, software support is often misunderstood and is not defined consistently among various software publications.