Software Evolution is a complex and prominent key research domain in software engineering. It has been the topic of numerous international conferences, workshops, books and scientific publications. On the other hand, it represents an omnipresent recurring problem for companies and needs practical and scalable solutions to ensure software confidence, quality and reliability. This becomes even more crucial and critical in application domains where software is geographically distributed and involves multiple stakeholders (e.g., managers, designers, developers, clients) and where resources and requirements must be reconciled. Model-driven engineering (MDE) is a software engineering methodology that focuses on models as primary software artifacts. It helps to reduce complexity and increase productivity and reuse by raising the level of abstraction. With the advent and widespread use of MDE in academia and industry, the research topic of model-driven software evolution and co-evolution becomes more and more important. Because of this increasing importance, a successful series of annual international workshops has been set up since 2007 for the MoDSE workshop and from 2008 for the MCCM workshop, with the main objectives of model-driven software evolution (MoDSE) and model co-evolution and consistency management (MCCM). The MoDSE workshops of 2007 and 2008 investigated how model-driven evolution can enforce and reduce critical risks and important costs involved in software evolution, by employing high-level abstractions. Furthermore, the potential of model-driven engineering (MDE) to enforce and enhance software evolution was explored, weighing pros and cons of the use of MDE to manage and direct software evolution through innovative proposals.
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