The seven volumes LNCS 12249-12255 constitute the refereed proceedings of the 20th International Conference on Computational Science and Its Applications, ICCSA 2020, held in Cagliari, Italy, in July 2020. Due to COVID-19 pandemic the conference was organized in an online event.Computational Science is the main pillar of most of the present research, industrial and commercial applications, and plays a unique role in exploiting ICT innovative technologies.
The 466 full papers and 32 short papers presented were carefully reviewed and selected from 1450 submissions. Apart from the general track, ICCSA 2020 also include 52 workshops, in various areas of computational sciences, ranging from computational science technologies, to specific areas of computational sciences, such as software engineering, security, machine learning and artificial intelligence, blockchain technologies, and of applications in many fields.

Geometric Modeling, Graphics and Visualization.- Advanced and Emerging Applications.- International Workshop on Advanced Transport Tools and Methods (A2TM 2020).- International Workshop on Advances in Artificial Intelligence Learning Technologies: Blended Learning, STEM, Computational Thinking and Coding (AAILT 2020).- International Workshop on Advancements in Applied Machine Learning and Data Analytics (AAMDA 2020).- International Workshop on Advanced Computational Approaches in Artificial Intelligence and Complex Systems Applications (ACAC 2020).- International Workshop on Affective Computing and Emotion Recognition (ACER-EMORE 2020).- InternationalWorkshop on AI Factory and SmartManufacturing (AIFACTORY 2020).- International Workshop on Air Quality Monitoring and Citizen Science for Smart Urban Management. State of the Art and Perspectives (AirQ&CScience 2020).- International Workshop on Automatic Landform Classification: Spatial Methods and Applications (ALCSMA 2020).- International Workshop on Advances of Modelling Micromobility in Urban Spaces (AMMUS 2020).- International Workshop on Advances in Information Systems and Technologies for Emergency Management, Risk Assessment and Mitigation Based on the Resilience Concepts (ASTER 2020)