When I needed to do presentations of Scrum to executives and students, I started to look for existing ones. Most presentations I found were very good for detailed presentations or training. But what I was looking for was a presentation I could give in less than 15 minutes (or more if I wanted). Most of them also contained out dated content. For example, the latest changes in the Scrum framework were not present and what has been removed was still there.
UPDATE VERSION : https://www.slideshare.net/pmengal/scrum-in-ten-slides-v20-2018