I tend to use Confluence with the Draw.io plugin. I have a custom template for specification and requirements along with a business process. Changes are captu

I tend to use Confluence with the Draw.io plugin. I have a custom template for specification and requirements along with a business process. Changes are captured in the history and highlighted as part of the business process. It is a much better system for my team compared to getting changes by email or phone. It does take some discipline to execute, but it is worth the effort in my opinion.