Kaizen or Team Continuous Improvement

There are several techniques to improve the code quality and performance of your teams. But after you start practicing agile methods, introduce unit testing, implement continuous integration, employ Test-Driven Development (TDD), Behavior-Driven Development (BDD), or Domain-Driven Design (DDD), what's left? Increasing your organization scale? When you get to a certain number of individuals, the production dwindles. All that remains is to strengthen the quality of your workforce.