The 11 papers presented in this volume were carefully reviewed and selected from 15 submissions. These papers present performance evaluation of systems from a theoretical and practical viewpoint. Application of performance evaluation techniques to emerging technologies, like cyber-physical systems ranging from mobile devices and Internet-of-Things (IoT), fog and edge computing, applications to large-scale cloud computing systems, smart grids, security infrastructures, are among the topics of interest to EPEW 2025.