Software architecture design plays a crucial role in the software development process, as it establishes the foundation for the subsequent stages. After many years of teaching and conducting research in this subject, I have observed that there is a lack of literature that offers a concept of software architecture design in the context of modern software systems. To build reliable and scalable software systems, it is essential to have a thorough understanding of software architecture design, but there are few books that do so in an effective manner. This book is intended for a diverse audience, including software architects, developers, and students. Whether you are just starting out in the field or seeking to expand your knowledge, this book serves as an indispensable resource for anyone interested in software architecture design.

1. Introduction
2. Modelling Software Architecture
3. Designing Software Architecture
4. Analysing Software Architecture
5. Implementing Architecture
6. Evolving Architecture
7. Software Architecture with Formal Approaches
8. LifeNet - A Case Study of Designing Critical System
9. Ride Share - A Case Study of Designing Responsive System
10. Conclusion