Software is here to assist the process  Not the solution.

Software should be able to support all stages of product development including design, engineering, testing, marketing, distribution, service, maintenance, upgrades, etc.

How does Lean Management differ from traditional management practices?

Traditional management practice has been centered around managing people rather than systems. Traditional managers focus on controlling employees instead of focusing on how the company operates as an entity. They tend to view themselves as experts when in reality they have little knowledge or experience in running a large enterprise.

Why did Toyota become so successful using these techniques?

Toyota became very successful due to several factors. First, they had great leadership.