4th Workshop on Model-based                      and     Model-driven         Software
Modernization (MMSM 2018)
MMSM 2018 is the fourth edition in a series of workshops on Model-based and Model-
driven Software Modernization. MMSM workshops are regularly held in conjunction
with the biennial conference “Modellierung” since 2012. They are jointly organized by
three working groups of the German Informatics Society GI in the Special Interest
Group on Architectures. Those are concerned with long-living software systems, model-
driven software development, and traceability/evolution, respectively. MMSM 2018 was
held on February 21, 2018 as a satellite event of “Modellierung 2018”.
MMSM gives attention to the modernization of software systems with the support of
model-based and model-driven software development. Because demand for permanent
changeability and improved quality properties of software systems such as performance,
security, and dependability require substantial and frequent modernization measures.
Such software modernization encompasses both migration to new technological
platforms or other operational environments (porting) as well as modification to
changing functional and non-functional requirements (maintenance or extension).
Modernization becomes increasingly important the more essential software systems are
for business processes and products. Since many of these systems are critical and
complex, their modernization comprises the accomplishment of challenging tasks with
considerable cost and risk. The use of adequate models can support software developers
in mastering the complexity and controlling the risk by early assessment of quality
properties. The MMSM workshop is concerned with the identification of new research
directions based on the current industrial demand, the search for and discussion of
suitable solution approaches, and the exchange of know-how and experience regarding
model-based and model-driven techniques, methods, and tools for software
modernization. It aims at bringing together scientist and practitioners and fostering
discussion and knowledge transfer.
This year, the program of MMSM 2018 comprised presentations of two peer-reviewed
research papers that are featured in this volume. Due to their high initial quality and a
constructive reviewing process, we were able to accept all submissions, but one that had
been conditionally accepted was withdrawn by the authors. They were complemented by
a keynote presentation by Markus Völter and a selection of two invited talks presenting
recent achievements and preliminary results from research and practical application.
Furthermore, the workshop intentionally provided much space for interactive discussion
and group working activities. It is planned to publish the results of those parts ex post.
We thank everybody who contributed to MMSM 2018 and the organization team
of “Modellierung 2018” for their great support.
Paderborn/Stuttgart/Hamburg/Essen/Karlsruhe, February 2018
                                      Stefan Sauer – Steffen Becker – Matthias Riebisch
                                                – Marco Konersmann – Robert Heinrich