Thepresent book includes a set of selected extended papers from the 4thInternational Conference on Simulation and Modeling Methodologies, Technologiesand Applications (SIMULTECH 2014), held in Vienna, Austria, from 28 to 30 August2014. The conference brought together researchers, engineers and practitionersinterested in methodologies and applications of modeling and simulation. Newand innovative solutions are reported in this book. SIMULTECH 2014 received 167submissions, from 45 countries, in all continents. After a double blind paperreview performed by the Program Committee, 23% were accepted as full papers andthus selected for oral presentation. Additional papers were accepted as shortpapers and posters. A further selection was made after the Conference, basedalso on the assessment of presentation quality and audience interest, so thatthis book includes the extended and revised versions of the very best papers ofSIMULTECH 2014. Commitment to high quality standards isa major concern of SIMULTECHthat will be maintained in the next editions, considering not only thestringent paper acceptance ratios but also the quality of the programcommittee, keynote lectures, participation level and logistics.