Software evolution in agile development: a case study

Authors:
Renuka Sindhgatta;Nanjangud C. Narendra;Bikram Sengupta
Affiliations:
IBM Research India, Bangalore, India;IBM Research India, Bangalore, India;IBM Research India, Bangalore, India
Venue:
Proceedings of the ACM international conference companion on Object oriented programming systems languages and applications companion
Year:
2010

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Abstract

The agile development method (ADM) is characterized by continuous feedback and change, and a software system developed using ADMevolves continuously through short iterations. Empirical studies on evolution of software following agile development method have been sparse. Most studies on software evolution have been performed on systems built using traditional (waterfall) development methods or using the open source development approach. This paper summarizes our study on the evolution of an enterprise software system following ADM. We evaluated key characteristics of evolution in the light of Lehman's laws of software evolution dealing with continuous change and growth, self-regulation and conservation, increasing complexity and declining quality. Our study indicates that most laws of evolution are followed by the system. We also present our observations on agile practices such as collective code ownership, test driven development and collaboration when the team is distributed.