The purpose of an evolving Executing System is to have something built that is concrete and executable so users,
implementers, managers, and other affected stakeholders can touch and feel.
An instance of the Executing System aids in developing a shared vision of the proposed solution and provides a means
for understanding the features of the selected COTS Package(s), user business processes, and the user business process
interactions within the solution. It orients the project toward identification and resolution of critical issues and
risks rather than the production of paper documents.
An instance of the Executing System stimulates early discovery of mismatches and negotiations to resolve the mismatches
within the operational context of the system (e.g., use cases). It also objectively demonstrates the current state of
the project. This acts as a forcing function that drives the project to gain closure at regular intervals. Development
of an instance of the Executing System also fosters early elimination of architectural defects.
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