"Leading Lean Software Development: Results Are Not the Point" is a book written by Mary Poppendieck and Tom Poppendieck. Mary and Tom Poppendieck are leading experts in the field of Lean Software Development and the authors of several books on the subject.

The book provides an in-depth look at how to apply the principles of Lean Thinking to the software development process. The authors argue that traditional software development methods are no longer effective in today's fast-paced and ever-changing business environment, and that organizations must adopt a lean approach to stay competitive. The book is divided into three parts: the first part provides an overview of Lean Thinking, the second part examines how to apply Lean Thinking to the software development process, and the third part provides guidance on how to implement Lean Thinking in an organization.

key takeaways from the book:

1. Lean Thinking is a management philosophy that can be applied to software development to improve efficiency, quality, and customer satisfaction.

2. Results are not the only point of software development, but also the process and the way of thinking.

3. Lean Thinking is based on the principles of identifying value, mapping the value stream, creating flow, establishing pull, and pursuing perfection.

4. Lean Thinking is a culture change that requires the involvement of all employees in the software development process.

5. Lean Thinking requires a deep understanding of the customer's needs and the value they are looking for.

6. Lean Thinking emphasizes continuous improvement and the need to measure and monitor progress.

7. Lean Thinking can help organizations to reduce waste and create a sustainable competitive advantage.

8. Lean Thinking can be applied to different types of software development, such as Agile and Waterfall.

9. Lean Thinking requires a holistic approach that considers the entire software development process, not just individual activities.

10. Lean Thinking requires a mindset shift towards the continuous improvement, learning and experimentation.

This book provides a comprehensive guide to Lean Thinking and how it can be applied to the software development process. It is a valuable resource for anyone looking to improve the efficiency and effectiveness of their software development organization. The book emphasizes the importance of understanding the customer's needs and the value they are looking for and the need to continuously improve the process, rather than just focusing on the results.