Memo-driven meetings vs. PowerPoint-driven meetings:
https://www.businessinsider.com/bezos-admits-amazon-has-the-weirdest-meeting-culture-2018-4
Quoting:
"During an onstage interview Friday, Amazon CEO Jeff Bezos explained the strange meetings that Amazon holds.
Each meeting requires a well-crafted, six-page memo that the whole room sits and reads at the start.
Bezos banned PowerPoint years ago, and explained why the memo-driven meeting is far superior."