I made a procedure diagram to illustrate to management the functionality of a couple simple data pipelines that I created and maintain. I decided to anonymize and upload it, here, just as an example of how I make these. I usually use Lucidcharts, since it is free and browser-based; I just edit the default diagram template to make what I need. I like Lucidchart’s styling and find the tool easy to use. Below, see the linked and embedded pdf for the diagram!