- Everyone has Microsoft PowerPoint or something PowerPoint compatible. Visio is dated and doesn't work on MacOS. There are too many different LucidCharts/DrawIO/Diagrams.net competitors and no clear winner, so you have a 1/3 chance of someone having your chosen tool. YOu have a 95% chance of someone having PowerPoint.
- PowerPoint gives you amazing flexibility in the design of your diagram using familiar configuration options people have used in Word and PowerPoint for literally 30 years.
- Create a blank slide, and change your slide size to be huge. Design Tab > Slide Size > Page Setup. I use a Width of 30in and Height of 20in.