The Cost of Slow Testing

Software ages so old libraries old JDK's old everything even if you have a perfectly designed system 10 years later it's not that perfect anymore. Zona cube or structure 101 is an actual personized tool trying to analyze code. It uses static code analysis with different tools and it also does code coverage for tests and a lot of other things. I think the most important thing is to have code that is easily testable as well as what has the biggest impact on changeability how can I improve things there.