What separates software engineers from principal software engineers? Mainly communication skills. One of the main communication skills in the principal engineer’s toolbelt is diagramming. In this session we’ll discuss different types of diagrams and their purposes. Then we’ll look at different tools we can use to make and share diagrams. Hopefully, we’ll all come out of this with a greater ability to draw boxes and arrows in a way that can bring about better software and teamwork and bigger paychecks.