The ESM'2013 (The 27th annual European Simulation and Modelling Conference) is the original international European conference concerned with state of the art technology in modelling and simulation. ESM'2013 aims to provide an overview of academic research in the field of computer simulation. A number of major tracks of simulation research are presented next to specific workshops, which capture the art and science of present-day simulation research. ESM'2013 consists of four major parts. A part concerns itself with simulation methodology, another with simulation applications, then there are the specialised workshops, the exhibition and last but not least the poster sessions for students.