|Authors||K. J. Moløkken-Østvold and M. Jørgensen|
|Title||A Comparison of Software Project Overruns - Flexible Vs. Sequential Development Models|
|Afilliation||Software Engineering, Software Engineering|
|Publication Type||Journal Article|
|Year of Publication||2005|
|Journal||IEEE Transactions on Software Engineering|
Flexible software development models, e.g., evolutionary and incremental models, have become increasingly popular. Advocates of these models claim that among the benefits of these models are reduced software project overruns, which is one of the main challenges of software project management. This paper describes an in-depth survey of software development projects. The results support the claim that projects which employ a flexible development model experience less effort overruns than do those who employ a sequential model. The reason for the difference is not obvious. We found, for example, no variation in project size, estimation process, or delivered proportion of planned functionality between projects applying different types of development model. When the managers were asked to provide reasons for software overruns and/or estimation accuracy, the largest difference were that more of flexible projects cited good requirement specifications and good collaboration/communication with clients as contributing to accurate estimates.
Project questions are dowloadable