Complexity sciences with Lean and Agile Software Development are the three pillars of modern ways of working.

Complexity is considered by many to be the single most important scientific development since general relativity. Complexity Sciences study systems like weather systems, cities, organisations, and teams. With users, customers and competitors that are hyperconnected, and with the rate of change of the markets and the technology that is constantly accelerating, understanding Complexity today is more useful than ever.

While Complexity science literature is very theoretic, this book explores its practical applications in the context of software and digital products development. These practices give you the means to navigate everyday Complexity and to dance with complex systems. This book is for everyone working in software and digital products development, and more specifically for leaders, managers, facilitators, and team members.

The practices in this book constitute a practical introduction to Complexity thinking and are a stepstone to the theory of Complexity. For those already familiar with the theory of Complexity, the practices in this book suggest ways to put Complexity in action and to live Complexity.

The practices in Part 1 explore ways to orient self-organisation toward positive outcomes. The practices in Part 2 explore ways to sense and assess the degree of Complexity and ways to adapt accordingly. All the remaining practices are in Part 3, and they focus on groups larger than the single team, up to the whole organisation.

The practices in this book are inspired by the work of Joseph Pelrine, David S. Alberts, Ralph Stacey, and Dave Snowden. This book also contains original contributions from Dean Latchana, Liz Keogh, and the author himself, Luca Minudel. This book also aspires to be an example that inspires other Complexity practitioners to share other practices that could potentially be added to this book.

Note to this 5th incremental version of the ebook, published at the beginning of September 2020.

This fifth version of the catalogue adds the last 2 remaining practices of Part 2. It also adds some more blurbs to Part 1 and Part 2, highlighting the key concepts. Part 1 has been refreshed to clarify the distinction between self-organisation as intended in Complexity Sciences and "self-organising teams" as intended in the Manifesto for the Agile Software Development.