Basically there has been no official communication about teams affected, amount of people affected, or time where it would be shared, and instead each team is randomly informed by their director.
This means you can never know if you are safe or not, if the layoff wave has passed or not, etc.
The past 3 days have probably been the least productive for all of Amazon's existence, everyone is thinking only about those layoffs (and I'm in an org that is supposed to be safe...).
So far there are reports of about 30 teams being shut down, but new ones are coming every hour or so.
Everyone would have preferred a clear "you're in / you're out" email at a fixed time like it's been done at Facebook, Twitter, etc. but no, we're going to be living in fear for the next weeks or months.