This volume features a collection of papers on emerging concepts, significant insights, novel approaches and ideas in information systems development (ISD). It examines and investigates up-and-coming trends in ISD in general, emphasizing the continuous collaboration between developers and operators to optimize the software delivery time. The book gathers selected papers from the 29th International Conference on Information Systems Development held at Universitat Politècnica de València, Spain, September 8-10, 2021. 

The theme of ISD2021 was Crossing Boundaries between Development and Operations (DevOps) in Information Systems. The revised and extended papers focus on the influences among information systems, organizational structures, processes and people from its conception to its operation. They examine methodological issues and ways in which the IS designers, developers and operators are transforming organisations and society through information systems.

Emilio Insfran Pelozo is an Associate Professor in the Department of Information Systems and Computation (DISC) at the Universitat Politècnica de València (Spain). His research interests are cloud service architectures, DevOps, model-driven development, requirements engineering, and software quality.

Fernando González-Ladrón-de-Guevara is an Associate Professor in the Department of Business Organisation at the Universitat Politècnica de València (Spain). His research interests lie in the realm of development and implementation of Information Systems in organizational contexts.

Silvia Abrahão is an Associate Professor in the Department of Computer Science at the Universitat Politècnica de València (Spain). Her main areas of expertise are quality assurance in model-driven engineering, empirical assessment of software modeling approaches and the integration of usability in system development.

Marta Fernández-Diego is an Assistant Professor in the Department of Business Organisation at the Universitat Politècnica de València (Spain), where she teaches in the School of Informatics. Her research interests include business analytics, project risk management, empirical software engineering, and software effort estimation.

Chris Barry works with the Cairnes School of Business and Economics at the National University of Ireland, Galway. He lectures and researches a range of areas in Information Systems including systems analysis and design, information systems management, and ethics in information systems development. 

Michael Lang is a Senior Lecturer in Business Information Systems at the Cairnes School of Business and Economics, National University of Ireland, Galway. His research interests are business systems analysis and design, information systems privacy, and information systems education. 

Henry Linger is an Associate Professor in the Faculty of Information Technology and a senior researcher withthe Centre for Organisational and Social Informatics (COSI) at Monash University in Melbourne, Australia. His research is at the intersection of information systems, knowledge management, and project management, with a focus on the design of information systems to support knowledge work. 

Christoph Schneider is an Assistant Professor in the Information Systems Department at IESE Business School. His research focuses on the effects of user interface design on cognition, affect, and behavior, in particular in the context of web-based user interfaces. 

 A Data-Driven Optimization Computational Tool Design for Bike-Sharing Station Distribution in Small to Medium-Sized Cities: A Case Study for Cuenca, Ecuador.- A Method to Build Serious Games for Older Adults ADE2: Evaluation of User Perceptions and Threats of Validity.- Accessibility of digital content of information systems in Europe: users' perspective.- Authentic Learning for Groupwork Skills: A Comparison Between a Physical and a Virtual Experience.- Business-IT alignment anti-patterns.- Fuzzy Personalization of mobile apps: a case study from mHealth domain.- Government IT Projects: Current Evidence of Cost and Schedule Overrun and their Antecedents.- Heat Maps from Decision Flaps - What We See and What We Think.