The Toyota Way or Toyota Production System is one of the most remarkable manufacturing frameworks and being practically the origin of Lean, it is one of the most influential to Agile product development.
Many excellent books have been published on the subject, but, if you are not familiar with the Toyota Way, as a first approach, you can find here its fourteen principles which I think will give you a good starting point to understand why the Japanese company went from being an unknown player in the market to become the largest car manufacturer in the world beating its rivals on value, price, and quality.
