I mostly use web sequence diagrams, and commit the text. https://www.websequencediagrams.com https://www.websequencediagrams.com Otherwise I just draw on a wh

I mostly use web sequence diagrams, and commit the text. https://www.websequencediagrams.com https://www.websequencediagrams.com Otherwise I just draw on a white board and take a photo Then finally Visio if needed.