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The Role of Models in Self-adaptive and Self-healing Systems Happe, Jens Koziolek, Heiko Bellur, Umesh Giese, Holger Hasselbring, Wilhelm Laddaga, Robert Tiziana, Margaria Martinez, Josu Müller-Schloer, Christian Reichle, Roland Self-adaptive self-healing models hierarchicy Self-healing and self-adaptive systems dynamically react on changes in the environment. They enable software systems to adjust to new conditions and work optimally even in unstable environments. However, such systems have to cope with an ever increasing complexity and size of software systems. In order to handle such systems, models are an efficient means for analysis, control, and documentation. Furthermore, hierarchically structured models can make self-healing and self-adaptation manageable. In this report, we discuss several questions that address the role of models in self-healing and self-adaptive systems. We outline today's challenges and present different viewpoints on the application and benefit of models. Schloss Dagstuhl – Leibniz-Zentrum für Informatik Jens Happe and Heiko Koziolek and Umesh Bellur and Holger Giese and Wilhelm Hasselbring and Robert Laddaga and Margaria Tiziana and Josu Martinez and Christian Müller-Schloer and Roland Reichle 2009 Is Part Of Dagstuhl Seminar Proceedings, Volume 9201, Self-Healing and Self-Adaptive Systems (2009) InProceedings Text doc-type:ResearchArticle publishedVersion application/pdf doi:10.4230/DagSemProc.09201.4 urn:nbn:de:0030-drops-21001 https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.09201.4 eng https://creativecommons.org/licenses/by/4.0/legalcode