This book constitutes the refereed proceedings of the 20th International Conference on Formal Aspects of Component Software, FACS 2024, held in Milan, Italy, during September 9-10, 2024.
The 7 full papers and 1 short paper included in this book were carefully reviewed and selected from 16 submissions. They are organized in topical sections as follows: verification and testing, formal models, and security and blockchain.

This book constitutes the refereed proceedings of the 20th International Conference on Formal Aspects of Component Software, FACS 2024, held in Milan, Italy, during September 9-10, 2024.
The 7 full papers and 1 short paper included in this book were carefully reviewed and selected from 16 submissions. They are organized in topical sections as follows: verification and testing, formal models, and security and blockchain.

This book constitutes the refereed proceedings of the 20th International Conference on Formal Aspects of Component Software, FACS 2024, held in Milan, Italy, during September 9-10, 2024.
The 7 full papers and 1 short paper included in this book were carefully reviewed and selected from 16 submissions. They are organized in topical sections as follows: verification and testing, formal models, and security and blockchain.