This volume pays tribute to the scientific achievements of Hartmut Ehrig, who passed away in March 2016.The contributions represent a selection from a symposium, held in October 2016 at TU Berlin, commemorating Hartmut' s life and work as well as other invited papers in the areas he was active in.

This book is an introduction to graph transformation as a foundation to model-based software engineering at the level of both individual systems and domain-specific modelling languages. The first part of the book presents the fundamentals in a precise, yet largely informal way.