About T2D3
The T2D3 Book
T2D3: How Some Software Startups Scale, Where Many Fail
Written by T2D3 founder Stijn Hendrikse, the T2D3 book is a must-read for SaaS founders, CEOs, marketers, and investors. It’s one of the best SaaS marketing books for learning how to scale a startup the right way—without burning through capital or flying blind.
Packed with real-world insights, practical templates, and hard-earned lessons from over 20 years in B2B SaaS, T2D3 walks you through:
- Crafting your Go-To-Market strategy
- Building your marketing foundation
- Hiring your first GTM team
- Navigating the critical stages of SaaS growth
- Avoiding common startup pitfalls

Why T2D3?
- Access to the T2D3 SaaS frameworks used by 100+ B2B software companies
- A self-paced B2B SaaS marketing course rooted in the T2D3 model
- B2B SaaS marketing certification
- Tools and templates to help you align product, sales, and marketing teams
- A roadmap to apply the T2D3 approach to your own SaaS company
"Stijn transformed Atera into a global SaaS company and created a strong platform for growth."

"Working with Stijn yielded the best of all worlds, immediate hands-on results and a lasting impact on the business."

"With Stijn’s help, we feel like we have an engine in place where we feel we can really see serious growth in the coming year."

"Stijn is a rare leader whose compass is grounded in inspiring people to be the best they can be and is governed by integrity and responsibility."

Meet Stijn Hendrikse
T2D3 was founded by Stijn Hendrikse, a seasoned B2B SaaS leader with over 20 years of experience as CMO, CEO, and GTM advisor. From launching Office 365 at Microsoft to scaling growth-stage SaaS startups like MightyCall and Acumatica, Stijn has been in the trenches of what it really takes to grow.
He created T2D3 to fill a critical gap: practical, operator-led guidance for SaaS leaders who need more than theory—they need a playbook. That mission is now brought to life through tools, training, and a growing community of founders, marketers, and investors. You can also work directly with Stijn as a T2D3 coach, getting hands-on guidance tailored to your stage, team, and growth goals.
