Software Architecture 15th European Conference, ECSA 2021, Virtual Event, Sweden, September 13-17, 2021, Proceedings

This book constitutes the refereed proceedings of the 15th International Conference on Software Architecture, ECSA 2021, held in Sweden, in September 2021. Due to the COVID-19 pandemic, the conference was held virtually.
For the Research Track, 11 full papers, presented together with 5 short papers, were carefully reviewed and selected from 58 submissions. The papers are organized in topical sections as follows: architectures for reconfigurable and self-adaptive systems; machine learning for software architecture; architectural knowledge, decisions, and rationale; architecting for quality attributes; architecture-centric source code analysis; and experiences and learnings from industrial case studies.

Architectures for reconfigurable and self-adaptive systems.- Dynamic Updates of Virtual PLCs deployed as Kubernetes Microservices.- A runtime safety enforcement approach by monitoring and adaptation.- Towards a Taxonomy of Autonomous Systems.- Machine learning for Software Architecture.- Explaining Architectural Tradeoff Spaces: a Machine Learning Approach.- A Machine Learning Approach to Service Discovery for Microservice Architectures.- FLRA: A Reference Architecture for Federated Learning Systems.-  Architectural knowledge, decisions, and rationale.- Tracelink Recovery for Software Architecture Documentation.- An Exploratory Study on Architectural Knowledge in Issue Tracking Systems.-  Human Behavior-Oriented Architectural Design.- Architecting for Quality Attributes.- Updating Service-based Software Systems in Air-Gapped Environments.-  Energy-Aware Robotics Software: A Catalog of Architectural Tactics from the ROS Ecosystem.- Taxonomy of Edge Blockchain Network Designs.- Impact analysis of software parallelism in big data technologies for data-intensive architectures.- Architecture-centric Source Code Analysis.- State of the Practice in Application Programming Interfaces (APIs): A Case Study.- Identifying Domain-Based Cyclic Dependencies in Microservice APIs Using Source Code Detectors.- Optimized Dependency Weights in Source Code Clustering.-  Experiences and Learnings from Industrial Case Studies.- Reliable Event Routing in the Cloud and on the Edge: An Internet-of-Things Solution in the AgeTech Domain.- An Experience Report on Modernizing I/O Configuration Software .- Enabling SMEs to Industry 4.0 using the BaSyx middleware: a case study.- Software Architectures for Edge Analytics: A Survey.- How Software Architects Focus Their Attention.