The iterative enhancement model that's depicted in the following diagram was proposed in 1975 by Basili and Victor [2] in an attempt to improve on some of the caveats of the waterfall model. By recognizing that requirements may potentially change for long-running projects, the model advocates executing a set of evolution cycles or iterations, with each one being allocated a fixed amount of time out of the project's time budget:
Figure 3: The steps of the interactive enhancement model
Instead of starting with the full set of specifications, each cycle focuses on building some parts of the final deliverable and refining ...
