Google Slides and Drawings (under + > More...) are great tools. They support the diagramming objects, connectors, shared collaboration, and integration with the other Google Doc tools. They also have great history and diff tools as well as team comments, with actions.
.. but they are manual. It's great to have history, diff, comments, etc. But why do I have to spend time manually creating a diagram and updating it every time I add a new dependency when it can be automatically done for me?
