Software process standards and models are used in large- and medium-sized organizations to reach the Iron Triangle. In contrast, small and very small entities either ignore them or cannot apply them because these standards and models are technically and economically not affordable. Consequently, agile software development practices are usually used by small and very small organizations. The ISO/IEC 29110 series of standards and guides are now available for very small organizations, but their utilization with agile practices represents an agility-rigor reconciliation problem. In this research, we report the experimental evaluation of Scrum + EPG (a reconciled agile-rigorous software Project Management process from Scrum, and the Project Management process of the ISO/IEC 29110 series-Entry profile, documented in an Electronic Process Guide). Scrum + EPG was compared to Scrum EPG (a non-modified Scrum process also documented in an Electronic Process Guide). Thirty-two international academicians and practitioners, including experts and novices on agile practices, from Latin America, North America, and Asia–Pacific regions, evaluated six metrics of usability. A within-subjects design and Wilcoxon matched-pairs signed-rank tests were applied for collecting and analyzing the experimental data. The statistical results support the claim that the Scrum + EPG was considered a high-quality conciliated agile-rigorous software Project Management process for the Entry profile. Given the scarcity of similar studies and the need for reconciling agile-rigorous software development practices, this study contributes to a plausible solution for very small organizations. Finally, further empirical research is encouraged to confirm, update, and extend the results reported in this investigation.

大中型组织使用软件过程标准和模型来达到Iron Triangle。相反，小型和小型实体要么忽略它们，要么无法应用它们，因为这些标准和模型在技术上和经济上都是无法承受的。因此，小型和小型组织通常使用敏捷软件开发实践。现在，非常小的组织可以使用ISO / IEC 29110系列标准和指南，但是将它们与敏捷实践结合使用会带来一个敏捷—严格协调的问题。在这项研究中，我们报告了对Scrum + EPG（来自Scrum的协调一致的严格软件项目管理过程，以及ISO / IEC 29110系列-入口配置文件的项目管理过程，在电子过程指南中进行了记录）的实验评估。将Scrum + EPG与Scrum EPG（一种未经修改的Scrum流程，也记录在《电子流程指南》中）进行了比较。来自拉丁美洲，北美和亚太地区的32名国际学者和实践者，包括敏捷实践的专家和新手，评估了六个可用性指标。受试者内部设计和Wilcoxon配对配对符号秩检验用于收集和分析实验数据。统计结果支持这样一种说法，即Scrum + EPG被认为是Entry概要文件的高质量，灵活，严谨的软件项目管理流程。鉴于类似研究的稀缺性以及协调敏捷严谨的软件开发实践的需求，这项研究为非常小的组织提供了一个可行的解决方案。最后，鼓励进行进一步的实证研究，以确认，更新和扩展该研究报告的结果。