Performance, Energy Savings and Security - An Introduction.

The International Symposia on the Modelling, Analysis and Simulation of Computer and Telecommunication Systems (MASCOTS) have a 28 year-long distinguished record, and we introduce the papers that were presented at the MASCOTS 2020 workshop. We also briefly review recent work of one of the founders of this series and organizer of this year’s conference on the occasion of his 75th birthday, covering recent research on the Performance of Systems and Networks encompassing a broad view that includes Quality of Service, Energy Consumption and Security.