The book talks about how to build companies that solve problems for customers. This book would be a good introduction to people who are new to product development. In short, think of what value you are bringing to a customer. The author phrases it as a Job to Be Done.
The book is short but still too long. It could be summarised in a blog post. While reading I felt that this book was written to justify consulting services Clayton is charging companies.
The book is easy to read and has many stories. Those stories though are suffering from selection bias and have little connection to the book ideas.
I would recommend this book to people who are new to product development, otherwise don't bother. Just read the book's summary.