This book constitutes the refereed proceedings of the 17th International Conference on Model Driven Engineering Languages and Systems, MODELS 2014, held in Valencia, Spain, in September/October 2014. The 41 full papers presented in this volume were carefully reviewed and selected from a total of 126 submissions. The scope of the conference series is broad, encompassing modeling languages, methods, tools, and applications considered from theoretical and practical angles and in academic and industrial settings. The papers report on the use of modeling in a wide range of cloud, mobile, and web computing, model transformation behavioral modeling, MDE: past, present, future, formal semantics, specification, and verification, models at runtime, feature and variability modeling, composition and adaptation, practices and experience, modeling for analysis, pragmatics, model extraction, manipulation and persistence, querying, and reasoning.

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 Politecnica de Valencia, 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.