Continual improvement vs step change improvement

Both sound same meaning.

Answer:

Continuous improvement, or Kaizen, is a method for identifying opportunities for streamlining work and reducing waste. The practice was formalized by the popularity of Lean / Agile / Kaizen in manufacturing and business, and it is now being used by thousands of companies all over the world to identify savings opportunities.

Continuous Improvement is an evolutionary process. But extraordinary threats and opportunities require a revolutionary, targeted response. When an organization needs to act quickly to ramp up production, reduce costs, or meet other extraordinary changes or goals is where the step change improvement comes to action.Step change improvement is a significant change in policy or attitude, especially one that results in an improvement or increase.