Loop - by Kipp Bodnar & Kieran Flanagan (Hardcover)

Book Synopsis

The marketing playbook that millions of companies adopted just broke -- Loop reveals the AI system replacing it.

If your marketing strategy stopped working, the problem isn't you. The problem is that AI broke the system every playbook was built on -- and nobody has replaced it.

Until now.

Kipp Bodnar and Kieran Flanagan built the marketing framework that millions of businesses adopted. Then they watched AI dismantle the only marketing model most businesses had ever known. So they threw out their own playbook and built a new one.

They tested it on HubSpot's marketing engine first. Within a year, it was outperforming the old one they'd ripped up.

In Loop, they introduce Loop Marketing: a four-stage system (Express, Tailor, Amplify, Evolve) where the teams that win are the ones that learn and adapt fastest, not spend the most.

With Loop, you will:

• Build a Taste Profile -- a living model of your buyer that predicts what they'll respond to before you spend a dollar.
• Escape the AI-sameness trap. Loop shows you how to build the core narratives that make you stand out and impossible to confuse with anyone else.
• Scale creative without producing slop. A system for 10x-ing output that sounds like your brand every single time.
• Master Answer Engine Optimization (AEO) -- the strategy that determines whether AI recommends your brand or buries it.
• Measure what your leadership actually wants to see.

This book is not about marketing theory. Loop works whether you're a five-person startup or a five-hundred-person marketing org. Whether you're B2B or DTC. The system scales because the principles are structural, not tactical.

A year from now, you'll either have a playbook or you'll have excuses. This is the playbook.

Review Quotes

"Loop captures the shift every marketing leader needs to understand: AI is not just changing how we create and ship, it's changing how buyers discover, evaluate, and decide. Kipp and Kieran give marketers a clear system for adapting to that new reality."

--Elena Verna, Head of Growth, Lovable

"Loop is the playbook modern marketing has been missing. It treats marketing as a system to engineer, and it gives you a proven framework to build that system inside your own team. A must-read for any leader who wants to get ahead in the age of AI."

--Ben Meer, Speaker, Coach, and Author of How to Be Good at Life

"Loop spells out the next era of marketing instead of declaring the last one over. I helped build the last one--and I'm happily endorsing the new one. That's how good it is. AI didn't shrink the marketer's role . . . it expanded it."

--Dharmesh Shah, Cofounder and CTO, HubSpot

"AI will make it easier than ever to create forgettable marketing. Loop is for the marketers who want to build something indispensable, more useful, and more human."

--Joe Pulizzi, Founder of Content Marketing Institute and Author of Content Inc. and Epic Content Marketing

"Distribution is becoming the new moat in the AI era, and this book will help you build that moat."

--Lenny Rachitsky, Host of Lenny's Podcast

"I pay attention to people who built the thing they're teaching. Loop was written by two people who built one of the biggest marketing engines on the planet, and it's them showing their work. Read it and steal their homework."

--Codie Sanchez, CEO, Contrarian Thinking

"I've coached hundreds of CEOs and one pattern is clear: The best ones treat marketing like a growth system, not as a department. In Loop, Kipp and Kieran reveal the exact system leaders need to turn marketing into a compounding engine for growth--practical and essential for CEOs who want to scale."

--Eric Partaker, CEO Coach, ericpartaker.com

"Most people market. A select few build systems that create lasting impact. Kipp and Kieran have spent their careers understanding what separates the two. Loop is the distillation of those lessons--hard-won insights from years spent building, testing, and scaling what works."

--David Senra, Host of Founders Podcast

"Reading Loop is like having a great chef hand you their personal recipe book. The techniques are world-class, but the instructions are so clear you can actually pull it off in your own kitchen."

--Jade Bonacolta, Founder of The Quiet Rich

"There's no vague advice here. Loop offers a coherent philosophy for how modern marketing actually works. That's especially valuable as the world keeps pace with AI. It's required reading for teams serious about growth."

--Alex Lieberman, Cofounder of Morning Brew and Tenex

About the Author

Kipp Bodnar is the chief marketing officer at HubSpot, where he leads the company's global marketing strategy across awareness, demand, and brand, as well as HubSpot's strategic partnerships. With over fifteen years at HubSpot, Kipp has helped scale the company from a startup into the #1 agentic customer platform for growing businesses.

Kipp is the author of Loop: Outlearn. Outmarket. Outgrow. and co-host of Marketing Against the Grain, a podcast exploring the intersection of marketing, AI, and business growth. He is an active advisor and investor in some of the world's leading technology companies and serves on the board of directors for Gusto and Similarweb.

Kieran Flanagan has spent his career at the intersection of growth, marketing, and technology -- first as SVP of Marketing at HubSpot, then as CMO at Zapier, and now as SVP of Agentic GTM and Systems at HubSpot, where he's building the organization that makes AI the engine behind every go-to-market motion. He invests in and advises companies at the frontier of SaaS (Sequoia Scout; Miro, Ramp, Chainlink, and others), and reaches hundreds of thousands of practitioners through Marketing Against the Grain, one of the leading YouTube channels on AI for GTM, and his Substack newsletter.