Dantotsu Quality for Software Engineering

Exploring how Toyota’s radical quality mindset can improve the way we build software


What is Dantotsu quality?

Dantotsu (断トツ) means “extreme”, “radical”, “unparalleled”. At Toyota, Dantotsu quality aims for radical improvement, not marginal gains.

“Many companies seem to be in trouble because product quality is not getting better despite company-wide [...] “quality first” policy”
Sadao Nomura

If this quote resonates with you, you’re in the right place.
This page is a hub for the work in progress exploration of how we can transpose Dantotsu quality philosophy to software engineering.


Where these ideas come from

“The Toyota Way of Dantotsu Radical Quality Improvement” by Sadao Nomura.

Discover the book →

Mental models

A few printable mental models to challenge common coding mistakes

Explore the mental models →