This open access book constitutes the proceedings of the 23rd International Conference
on Fundamental Approaches to Software Engineering, FASE 2020, which took place in
Dublin, Ireland, in April 2020, and was held as Part of the European Joint Conferences
on Theory and Practice of Software, ETAPS 2020.
The 23 full papers, 1 tool paper and 6 testing competition papers presented in this
volume were carefully reviewed and selected from 81 submissions.
The papers cover topics such as requirements engineering, software architectures,
specification, software quality, validation, verification of functional and non-functional
properties, model-driven development and model transformation, software processes,
security and software evolution.