Jan Bosch – författare

A practical guide to designing and implementing software architectures.

As software R&D investment increases, the benefits from short feedback cycles using technologies such as continuous deployment, experimentation-based development, and multidisciplinary teams require a fundamentally different strategy and process. This book will cover the three overall challenges that companies are grappling with: speed, data and ecosystems. Speed deals with shortening the cycle time in R&D. Data deals with increasing the use of and benefit from the massive amounts of data that companies collect. Ecosystems address the transition of companies from being internally focused to being ecosystem oriented by analyzing what the company is uniquely good at and where it adds value.

As software RandD investment increases, the benefits from short feedback cycles using technologies such as continuous deployment, experimentation-based development, and multidisciplinary teams require a fundamentally different strategy and process. This book will cover the three overall challenges that companies are grappling with: speed, data and ecosystems. Speed deals with shortening the cycle time in RandD. Data deals with increasing the use of and benefit from the massive amounts of data that companies collect. Ecosystems address the transition of companies from being internally focused to being ecosystem oriented by analyzing what the company is uniquely good at and where it adds value.

As the field of software architecture matures, several trends can be observed. The first is a recognition of the role of software architecture in all phases of software development. Whereas initially software architecture was primarily associated with the architecture design phase, we now see that software architecture is treated explicitly during development, product derivation in software product lines, at run-time, and during system evolution. A second trend is explicitly relating architecture design decisions to the requirements satisfied by these design decisions. Another trend is the increased use of quantitative assessment of software architectures. Finally, we see continued work on dynamic software architectures, with challenges arising from applications involving ubiquitous computing, mobile collaboration, and mobile computing. These trends can be seen in the papers collected in this volume, which represent some of the latest work by researchers and practitioners.The papers were presented at the 3rd Working IEEE/IFIP Conference on Software Architecture (WICSA3), which was held in conjunction with the 17th World Computer Congress, sponsored by the International Federation for Information Processing (IFIP), and which convened in Montreal, Quebec, Canada in August 2002. WICSA3 is a working conference, with paper sessions for presenting new results from research and practice, and working sessions for identifying new research directions. The papers were organized into five sessions. Two of these sessions, "Dynamic Software Architectures" and "Component-based Architectures", contain papers that focus on a particular architectural style and its properties. The remaining sessions, "Architecture Analysis", "Architecture Description" and "Architecture Reconstruction and Evolution", contain papers that describe new approaches and techniques related to software architecture.

For more and more systems, software has moved from a peripheral to a central role, replacing mechanical parts and hardware and giving the product a competitive edge. Consequences of this trend are an increase in: the size of software systems, the variability in software artifacts, and the importance of software in achieving the system-level properties. Software architecture provides the necessary abstractions for managing the resulting complexity. We here introduce the Third Working IEEFlIFIP Conference on Software Architecture, WICSA3. That it is already the third such conference is in itself a clear indication that software architecture continues to be an important topic in industrial software development and in software engineering research. However, becoming an established field does not mean that software architecture provides less opportunity for innovation and new directions. On the contrary, one can identify a number of interesting trends within software architecture research. The first trend is that the role of the software architecture in all phases of software development is more explicitly recognized. Whereas initially software architecture was primarily associated with the architecture design phase, we now see that the software architecture is treated explicitly during development, product derivation in software product lines, at run-time, and during system evolution. Software architecture as an artifact has been decoupled from a particular lifecycle phase.

This book celebrates the 10-year anniversary of Software Center (a collaboration between 18 European companies and five Swedish universities) by presenting some of the most impactful and relevant journal or conference papers that researchers in the center have published over the last decade.The book is organized around the five themes around which research in Software Center is organized, i.e. Continuous Delivery, Continuous Architecture, Metrics, Customer Data and Ecosystems Driven Development, and AI Engineering. The focus of the Continuous Delivery theme is to help companies to continuously build high quality products with the right degree of automation. The Continuous Architecture theme addresses challenges that arise when balancing the need for architectural quality and more agile ways of working with shorter development cycles. The Metrics theme studies and provides insight to understand, monitor and improve software processes, products and organizations. The fourth theme, Customer Data and Ecosystem Driven Development, helps companies make sense of the vast amounts of data that are continuously collected from products in the field. Eventually, the theme of AI Engineering addresses the challenge that many companies struggle with in terms of deploying machine- and deep-learning models in industrial contexts with production quality. Each theme has its own part in the book and each part has an introduction chapter and then a carefully selected reprint of the most important papers from that theme.This book mainly aims at researchers and advanced professionals in the areas of software engineering who would like to get an overview about the achievement made in various topics relevant for industrial large-scale software development and management – and to see how research benefits from a close cooperation between industry and academia.

This book celebrates the 10-year anniversary of Software Center (a collaboration between 18 European companies and five Swedish universities) by presenting some of the most impactful and relevant journal or conference papers that researchers in the center have published over the last decade.The book is organized around the five themes around which research in Software Center is organized, i.e. Continuous Delivery, Continuous Architecture, Metrics, Customer Data and Ecosystems Driven Development, and AI Engineering. The focus of the Continuous Delivery theme is to help companies to continuously build high quality products with the right degree of automation. The Continuous Architecture theme addresses challenges that arise when balancing the need for architectural quality and more agile ways of working with shorter development cycles. The Metrics theme studies and provides insight to understand, monitor and improve software processes, products and organizations. The fourth theme, Customer Data and Ecosystem Driven Development, helps companies make sense of the vast amounts of data that are continuously collected from products in the field. Eventually, the theme of AI Engineering addresses the challenge that many companies struggle with in terms of deploying machine- and deep-learning models in industrial contexts with production quality. Each theme has its own part in the book and each part has an introduction chapter and then a carefully selected reprint of the most important papers from that theme.This book mainly aims at researchers and advanced professionals in the areas of software engineering who would like to get an overview about the achievement made in various topics relevant for industrial large-scale software development and management – and to see how research benefits from a close cooperation between industry and academia.

This book provides essential insights on the adoption of modern software engineering practices at large companies producing software-intensive systems, where hundreds or even thousands of engineers collaborate to deliver on new systems and new versions of already deployed ones. It is based on the findings collected and lessons learned at the Software Center (SC), a unique collaboration between research and industry, with Chalmers University of Technology, Gothenburg University and Malmö University as academic partners and Ericsson, AB Volvo, Volvo Car Corporation, Saab Electronic Defense Systems, Grundfos, Axis Communications, Jeppesen (Boeing) and Sony Mobile as industrial partners.The 17 chapters present the “Stairway to Heaven” model, which represents the typical evolution path companies move through as they develop and mature their software engineering capabilities. The chapters describe theoretical frameworks, conceptual models and, most importantly, the industrial experiences gained by the partner companies in applying novel software engineering techniques. The book’s structure consists of six parts. Part I describes the model in detail and presents an overview of lessons learned in the collaboration between industry and academia. Part II deals with the first step of the Stairway to Heaven, in which R&D adopts agile work practices. Part III of the book combines the next two phases, i.e., continuous integration (CI) and continuous delivery (CD), as they are closely intertwined. Part IV is concerned with the highest level, referred to as “R&D as an innovation system,” while Part V addresses a topic that is separate from the Stairway to Heaven and yet critically important in large organizations: organizational performance metrics that capture data, and visualizations of the status of software assets, defects and teams. Lastly, Part VI presents the perspectives of two of the SC partner companies.The book is intendedfor practitioners and professionals in the software-intensive systems industry, providing concrete models, frameworks and case studies that show the specific challenges that the partner companies encountered, their approaches to overcoming them, and the results. Researchers will gain valuable insights on the problems faced by large software companies, and on how to effectively tackle them in the context of successful cooperation projects.

This book provides essential insights on the adoption of modern software engineering practices at large companies producing software-intensive systems, where hundreds or even thousands of engineers collaborate to deliver on new systems and new versions of already deployed ones. It is based on the findings collected and lessons learned at the Software Center (SC), a unique collaboration between research and industry, with Chalmers University of Technology, Gothenburg University and Malmö University as academic partners and Ericsson, AB Volvo, Volvo Car Corporation, Saab Electronic Defense Systems, Grundfos, Axis Communications, Jeppesen (Boeing) and Sony Mobile as industrial partners.The 17 chapters present the “Stairway to Heaven” model, which represents the typical evolution path companies move through as they develop and mature their software engineering capabilities. The chapters describe theoretical frameworks, conceptual models and, most importantly, the industrial experiences gained by the partner companies in applying novel software engineering techniques. The book’s structure consists of six parts. Part I describes the model in detail and presents an overview of lessons learned in the collaboration between industry and academia. Part II deals with the first step of the Stairway to Heaven, in which R&D adopts agile work practices. Part III of the book combines the next two phases, i.e., continuous integration (CI) and continuous delivery (CD), as they are closely intertwined. Part IV is concerned with the highest level, referred to as “R&D as an innovation system,” while Part V addresses a topic that is separate from the Stairway to Heaven and yet critically important in large organizations: organizational performance metrics that capture data, and visualizations of the status of software assets, defects and teams. Lastly, Part VI presents the perspectives of two of the SC partner companies.The book is intendedfor practitioners and professionals in the software-intensive systems industry, providing concrete models, frameworks and case studies that show the specific challenges that the partner companies encountered, their approaches to overcoming them, and the results. Researchers will gain valuable insights on the problems faced by large software companies, and on how to effectively tackle them in the context of successful cooperation projects.

Afterthree decadesofresearch andpractice,reuse ofexistingsoftwareartefactsremains the most promising approach to decreasing effort for software development and evo- tion, increasing quality of software artefacts and decreasing time to market of software products. Over time, we have seen impressive improvements, in extra-organizational reuse,e.g.COTS,aswellasinintra-organizationalreuse,e.g.softwareproductfamilies. Despite the successes that we, as a community, have achieved, several challenges remain to be addressed. The theme for this eighth meeting of the premier international conference on software reuse is the management of software variability for reusable software.Allreusablesoftwareoperatesinmultiplecontextsandhastoaccommodatethe differencesbetweenthesecontextsthroughvariation.Inmodernsoftware,thenumberof variation points may range in the thousands with an even larger number of dependencies between these points. Topics addressing the theme include the representation, design, assessment and evolution of software variability. The proceedings that you are holding as you read this report on the current state-- the-art in software reuse.Topics covered in the proceedings include software variability, testing of reusable software artefacts, feature modeling, aspect-oriented software de- lopment, composition of components and services, model-based approaches and several other aspects of software reuse.May 2004 Jan Bosch Charles Krueger Organizing Committee General Chair Kyo C. Kang, Pohang University of Science and Technology, Korea Program Co-chairs Jan Bosch, University of Groningen, The Netherlands Charles Krueger, BigLever Software, Inc., U.S.A.

This book constitutes the refereed proceedings of the Third International Conference on Generative and Component-Based Software Engineering, GCSE 2001, held in Erfurt, Germany, in September 2001. The 14 revised full papers presented together with one invited paper were carefully reviewed and selected from 43 submissions. The papers are organized in topical sections on software product lines, aspects, generic and generative approaches, and components and architectures.

Jan Bosch Stuart Mitchell University of Karlskrona/Ronneby University of York Dept of Computer Science Dept of Computer Science SoftCenter, S-372 25, Ronneby, Sweden York, United Kingdom Jan.Bosch@ide.hk-r.se Stuart@minster.cs.york.ac.uk 1 Introduction Although becoming more accepted in software industry, object-oriented technology still is an active ?eld of research with many issues remaining to be addressed. This workshop reader, in a way, presents the width of the ongoing research activities in object-orientation. However, we feel one can classify these activities into three cate- ries: * Domain-speci?c: Several activities focus on a single application, e.g. telec- munication, or computer-science, e.g. real-time and mobility, domain. Research tries to address the domain-speci?c problems of object-oriented technology. * Design issues: Object-oriented design has been an issue for at least a decade, but one can identify an increasing focus on formal approaches and on the evo- tion and re-engineering of existing object-oriented software.* Beyond object-orientation: The object-oriented paradigm will, at some point, be replaced by a subsequent paradigm and several research efforts investigate alternative or extended approaches. Examples are extended language expr- siveness for, e.g. design patterns and frameworks, component-oriented p- gramming and aspect-oriented programming. 2 Contents The remainder of this book is a selection and re-iteration of the contributions to 12 workshops (of a total of 15) held during the ECOOP'97 conference. The workshops generally relate to one of the above categories.

This book constitutes the joint refereed post-conference proceedings of 18 workshops held in conjunction with the 12th European Conference on Object-Oriented Programming, ECOOP'98, held in Brussels, Belgium, in July 1998. Also included are revised demos and posters presented at the conference. The volume presents around 250 revised contributions, including surveys by the respective workshop organizers and abstracts of the individual contributions. The wealth of up-to-date information provided spans the whole spectrum of object technologies, from theoretical and foundational issues to applications in a variety of domains.

This volume constitutes the refereed proceedings of the 14th International Software Product Line Conference, SPLC 2010, held on Jeju Island, South Korea, in September 2010.

The success of product line engineering techniques in the last 15 years has popularized the use of software variability as a key modeling approach for describing the commonality and variability of systems at all stages of the software lifecycle. Software product lines enable a family of products to share a common core platform, while allowing for product specific functionality being built on top of the platform. Many companies have exploited the concept of software product lines to increase the resources that focus on highly differentiating functionality and thus improve their competitiveness with higher quality and reusable products and decreasing the time-to-market condition. Many books on product line engineering either introduce specific product line techniques or include brief summaries of industrial cases. From these sources, it is difficult to gain a comprehensive understanding of the various dimensions and aspects of software variability. Here the editors address this gap by providing a comprehensive reference on the notion of variability modeling in the context of software product line engineering, presenting an overview of the techniques proposed for variability modeling and giving a detailed perspective on software variability management. Their book is organized in four main parts, which guide the reader through the various aspects and dimensions of software variability. Part 1 which is mostly written by the editors themselves introduces the major topics related to software variability modeling, thus providing a multi-faceted view of both technological and management issues. Next, part 2 of the book comprises four separate chapters dedicated to research and commercial tools. Part 3 then continues with the most practical viewpoint of the book presenting three different industry cases on how variability is managed in real industry projects. Finally, part 4 concludes the book and encompasses six different chapters on emerging research topics in software variability like e.g. service-oriented or dynamic software product lines, or variability and aspect orientation.Each chapter briefly summarizes “What you will learn in this chapter”, so both expert and novice readers can easily locate the topics dealt with. Overall, the book captures the current state of the art and best practices, and indicates important open research challenges as well as possible pitfalls. Thus it serves as a reference for researchers and practitioners in software variability management, allowing them to develop the next set of solutions, techniques and methods in this complicated and yet fascinating field of software engineering.