A Design Sprint is a time-constrained and structured team brainstorming meeting with a goal of pumping out a quick solution to a problem. Enterprise Design Sprints is a guide to being more effective with yours.
I picked up this book without a clear understanding of what a design sprint was, and I walked away still wondering how this is useful to me. Truth is - I don't think this is a useful concept for most people. There's a narrow niche of mid-level management in product focused and UX focused areas that may possibly get some ideas from this book. For everyone else, it will feel like a waste of time.
Most of the book is spent describing how you can benefit from design sprints, when you should sprint, what they're good for, what they're not good for, working with upper management, planning, and setup. It's not until almost the end that they actually mention the execution of a design sprint - and that ends up being quite heavy on the arts and crafts for my taste.
This book really could have been narrowed down to just chapter 4, and even then, it's only going to be useful for a very select group of people.
Really short, insightful recap of UX and how to do it. The parts that stick with me are making a list of assumptions about your users and adjusting, and storyboarding for how they might improve.