A Method of Setting the Order of User Story Development of an Agile-Waterfall Hybrid Method by Focusing on Common Objects
Atsushi Shimoda, Kazuyuki Yaguchi · 2017
In developing enterprise information systems, it has been common to adopt a waterfall (WF)-type development method due to its adaptability to large-scale projects, high reliability, high efficiency in production, high estimation accuracy, and the like. Meanwhile, in recent years, the agile-type development method that repeats small releases is spreading as business environments change more intensely. For this reason, the development of a hybrid (HY)-type method that combines WF-type and agile-type development has attracted attention. Therefore, in this research, we report the result of examining the method that promotes rational development by considering the trade-off between cost reduction by simultaneous development of common objects as the overall optimality (the advantage of WF method) and early realization of value as local optimality (an advantage of agile method). For this purpose, we propose a method that achieves early realization of value and low cost by managing the relation between user stories and common objects in a matrix. Subsequently, we apply the proposed method to the basic design of a library information system and offer the results. In conclusion, we report cases where cost increases can be suppressed by delaying the value realization to some extent.