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Together with many success stories, promises such as the increase in production speed and the improvement in stakeholders’ collaboration have contributed to making agile a transformation in the software industry in which many companies want to take part. However, driven either by a natural and expected evolution or by contextual factors that challenge the adoption of agile methods as prescribed by their creator(s), software processes in practice mutate into hybrids over time. Are these still agile? In this article, we investigate the question: what makes a software development method agile? We present an empirical study grounded in a large-scale international survey that aims to identify software development methods and practices that improve or tame agility. Based on 556 data points, we analyze the perceived degree of agility in the implementation of standard project disciplines and its relation to used development methods and practices. Our findings suggest that only a small number of participants operate their projects in a purely traditional or agile manner (under 15 percent). That said, most project disciplines and most practices show a clear trend towards increasing degrees of agility. Compared to the methods used to develop software, the selection of practices has a stronger effect on the degree of agility of a given discipline. Finally, there are no methods or practices that explicitly guarantee or prevent agility. We conclude that agility cannot be defined solely at the process level. Additional factors need to be taken into account when trying to implement or improve agility in a software company. Finally, we discuss the field of software process-related research in the light of our findings and present a roadmap for future research.

The 2019 International Conference on Software and System Processes (ICSSP 2019) was held in conjunction with the 41st International Conference on Software Engineering (ICSE 2019) in Montreal, Canada, May 25-26, 2019. ICSSP is a leading international forum for research on software and systems processesthe 2019 conference extended a sequence of predecessor conferences and workshops stretching back more than a decade. Although ICSSP has often been associated with ICSE and "in cooperation" with ACM, 2019 was the rst year that ICSSP was operated under a full co-located event agreement with ICSE and was fully sponsored by ACM and IEEE. ICSSP 2019 was organized, as usual, by the International Software and Systems Process Association.

The International Conference on Software and System Processes (ICSSP), continuing the success of Software Process Workshop (SPW), the Software Process Modeling and Simulation Workshop (ProSim) and the International Conference on Software Process (ICSP) conference series, has become the established premier event in the eld of software and systems engineering processes. It provides a leading forum for the exchange of research outcomes and industrial best-practices in process development from software and systems disciplines. ICSSP 2018 was held in Gothenburg, Sweden, 26-27 May 2018, co-located with the 40th International Conference on Software Engineering (ICSE). The theme of ICSSP 2018 was studying \Demands on Processes, Processes on Demand" by recognizing the demands on processes that include the need for both well-developed plans and incremental deliveries (agile and hybrid processes), utilization of increased automation (model-based engineering and DevOps), higher degrees of customer collaboration, comprehensive analysis of existing products for reuse (open source and COTS), and performance requirements of enterprise-level architectures. Papers presented at ICSSP discussed these issues across di erent domains, providing concepts, evidence, and experiences.

The International Conference on Software and System Processes (ICSSP), continuing the success of Software Process Workshop (SPW), the Software Process Modeling and Simulation Workshop (ProSim) and the International Conference on Software Process (ICSP) conference series, has become the established premier event in the eld of software and systems engineering processes. It provides a leading forum for the exchange of research outcomes and industrial best-practices in process development from software and systems disciplines. ICSSP 2018 was held in Gothenburg, Sweden, 26-27 May 2018, co-located with the 40th International Conference on Software Engineering (ICSE). The theme of ICSSP 2018 was studying \Demands on Processes, Processes on Demand" by recognizing the demands on processes that include the need for both well-developed plans and incremental deliveries (agile and hybrid processes), utilization of increased automation (model-based engineering and DevOps), higher degrees of customer collaboration, comprehensive analysis of existing products for reuse (open source and COTS), and performance requirements of enterprise-level architectures. Papers presented at ICSSP discussed these issues across di erent domains, providing concepts, evidence, and experiences.

Context:Software measurement is crucial to stay competitive and deliver quality software products.

Context: As many organizations modernize their software architecture and transition to the cloud, migrations towards microservices become more popular. Even though such migrations help to achieve organizational agility and effectiveness in software development, they are also highly complex, long-running, and multi-faceted. Objective: In this study we aim to comprehensively map the journey towards microservices and describe in detail what such a migration entails. In particular, we aim to discuss not only the technical migration, but also the long-term journey of change, on a systemic level. Method: Our research method is an inductive, qualitative study on two data sources. Two main methodological steps take place – interviews and analysis of discussions from StackOverflow. The analysis of both, the 19 interviews and 215 StackOverflow discussions, is based on techniques found in grounded theory. Results: Our results depict the migration journey, as it materializes within the migrating organization, from structural changes to specific technical changes that take place in the work of engineers. We provide an overview of how microservices migrations take place as well as a deconstruction of high level modes of change to specific solution outcomes. Our theory contains 2 modes of change taking place in migration iterations, 14 activities and 53 solution outcomes of engineers. One of our findings is on the architectural change that is iterative and needs both a long and short term perspective, including both business and technical understanding. In addition, we found that a big proportion of the technical migration has to do with setting up supporting artifacts and changing the paradigm that software is developed.

Modeling languages, just as all software artifacts, evolve. This poses the risk that legacy models of a company get lost, when they become incompatible with the new language version. To address this risk, a multitude of approaches for metamodel-model co-evolution were proposed in the last 10 years. However, the high number of solutions makes it difficult for practitioners to choose an appropriate approach. In this paper, we present a survey on 31 approaches to support metamodel-model co-evolution. We introduce a taxonomy of solution techniques and classify the existing approaches. To support researchers, we discuss the state of the art, in order to better identify open issues. Furthermore, we use the results to provide a decision support for practitioners, who aim to adopt solutions from research.

The International Conference on Software and System Processes (ICSSP), continuing the success of Software Process Workshop (SPW), the Software Process Modeling and Simulation Workshop (ProSim) and the International Conference on Software Process (ICSP) conference series, has become the established premier event in the field of software and systems engineering processes. It provides a leading forum for the exchange of research outcomes and industrial best-practices in process development from software and systems disciplines. ICSSP 2018 was held in Gothenburg, Sweden, 26-27 May 2018, co-located with the 40th International Conference on Software Engineering (ICSE). The theme of ICSSP 2018 was studying \Demands on Processes, Processes on Demand" by recognizing the demands on processes that include the need for both welldeveloped plans and incremental deliveries (agile and hybrid processes), utilization of increased automation (model-based engineering and DevOps), higher degrees of customer collaboration, comprehensive analysis of existing products for reuse (open source and COTS), and performance requirements of enterprise-level architectures. Papers presented at ICSSP discussed these issues across different domains, providing concepts, evidence, and experiences.