International Best Seller
The definitive “Customer Success Professional’s How-To-Guide”. It has been translated into Japanese, nominated for a SOVA Voice Arts Award, and remains on the Amazon Top 50 List (Business/Customer Relations) since its release in January 2020.

Acknowledgements
“In the Age of the Internet that ushered in this century, product was still king, and the Product Manager was the role around which everything else revolved. Today we are in the Age of the Customer, where the customer is king, and the role around which everything else must revolve is the Customer Success Manager. This is a new role, and that makes The Customer Success Professional’s Handbook a timely and welcome contribution across the globe. It is comprehensive, accurate, and incredibly well informed, making it a “must-read” for anyone performing, managing, or entering the profession.”
— Geoffrey A. Moore
Author, Crossing the Chasm & Zone to Win
“Customer Success is a critical component of any subscription business. It’s not just about the technology but how to ensure users and companies gain continuous business value from your product. Many organizations are struggling to define how best to do this. Ashvin and Ruben do an incredible job of taking you step-by-step to define and build a successful Customer Success organization. It is a must-read for any founder, CEO, executive, and Customer Success professional looking to understand the critical value Customer Success plays in the subscription economy.”
— Christina Kosmowski
CCO, Global Head of CS, Slack
“In the Digital Age where the customer is at the center of everything, The Customer Success Professional’s Handbook isn’t just for customer-facing teams. Everyone – from Product teams and Developers to Marketing organizations and Sales – will gain insights into the mind of the customer and will come away being able to make decisions that drive better outcomes for their customers.”
— Aaron Levie
CEO and Co-Founder, Box
“Everyone agrees that Customer Success is a worthy and profitable goal for every company. It’s the damn execution thing that gets in the way. And at the heart of execution lies the CSM. The Customer Success Professional’s Handbook is the most comprehensive book that’s ever been written on the critical steps for successfully implementing CS at scale. For CSMs in particular, the Handbook not only communicates what needs to be done but how and why. Ashvin and Ruben have brought together key insights from Gainsight’s vast experience along with some of the industry’s top CS executives to create a book that should be in the minds and on the desk of every CS professional.”
— J.B. Wood
President and CEO, TSIA
“With the explosion of Customer Success as a function and one of the most exciting and rewarding careers for the upcoming decade, there has been a need for the definitive how-to guide for Customer Success professionals. The Customer Success Professional’s Handbook fills this need with expert insights from industry professionals and the amazing thought leadership from Ruben and Ashvin, two known experts in the space. This is a must-read for not only CS professionals but anyone looking to build a customer-centric organization, the key to thriving in a world where customers have a plethora of choices and are in the driver’s seat of deciding who to build longstanding partnerships with.”
— Wendi C. Sturgis
CEO, Yext Europe
“Imagine Ramsay, Keller, Ducasse, Bourdain, Blumenthal all collaborating on the ultimate guide to becoming a chef. That’s what the vanguard of the modern Customer Success movement has done here to help budding Customer Success professionals earn their chef’s hat. This is a straight-up cookbook for one of the most important recipes in business growth today – the Customer Success organization.”
— Jay Simons
President, Atlassian
“The Customer Success Professional’s Handbook is a must-read for every customer-facing professional in a SaaS business. Irrespective of your role or the stage of your business, this book needs to be within arm’s reach as you formulate and operationalize your Customer Success disciplines. As the authors passionately point out, Customer Success is both a critical mindset and a team sport, and they have packed this guide with great examples and models that you can implement across your organization. As a leader who has focused my entire career on Customer Success, I am re-inspired to spring into action with new ideas.”
— Chris Comparato
CEO of Toast, Inc.
“The Customer Success Professional’s Handbook is a must-read for CSM practitioners at all levels. Putting the customer at the center should be a key component of a company’s overall strategy. Businesses are recognizing this and the CSM role is growing in influence across industries as a result. This one-of-a-kind guide from leading experts in the field provides practitioners with actionable insights and advice to help them drive growth for their companies and succeed in their careers. A must-read for customer-facing professionals!
— Yamini Rangan
Chief Customer Officer, Dropbox
“The Customer Success Professional’s Handbook is a critical resource for those in the Customer Success space or trying to better understand it. Ashvin and Ruben have lived this world in the trenches and understand the necessity and the challenges of the Customer Success role. Because the CS org and the CSM function will be critical to your long-term success as a business, this book is a must-read for those on the ground as well as those in leadership.
— Dan Steinman
GM of EMEA, Gainsight, Co-Author of Customer Success