Foreword to the Special Issue on the 2017 Edition of the Workshop on Performance Evaluation of communications in DIstributed Systems and WEb-based Service Architectures (PEDISWESA 2017)

Performance evaluation is still a topic that attracts a lot of attention in both distributed and mobile systems as well as web-based services architectures. Due to the recent advances in Internet based applications as well as distributed and mobile communication systems, we are witnessing a variety of new technologies. However, these systems are becoming very large and complex at the same time. Several challenges remain to be resolved before these systems become a commodity. Guaranteeing Quality of Service (QoS) and effective provisioning of web-based systems as well as distributed and mobile systems as well as evaluating their communication performance still represent open issues in the design of these systems. Quantitative analysis can be very difficult and may be intractable because of the state space explosion