Especially if enough Amazon internal tools rely on it - would be funny if there were a repeat of the FB debacle where Amazon employees somehow couldn't communicate/get back into their offices because of the problem they were trying to fix

Last I knew, Amazon used all Microsoft stuff for business communication.

Slack, as of last year.

https://slack.com/blog/news/slack-aws-drive-development-agil...

And before that, Amazon Chime was the messaging and conferencing tool. Now that I'm not using it, I actually miss it a lot!

Slack uses Chime for A/V under the hood so I don't think it is all that different for non text.[1]

[1] https://www.theverge.com/2020/6/4/21280829/slack-amazon-aws-...

I cried tears of joy when Amazon finally switched to Slack last year

We have a SMS text thread with about 12 people that we send one message on the first of every month. To make sure it is tested and ready to be used for communications if all other comms networks are down.

Slack going down is a godsend for developer productivity.

Slack is pretty much full AWS, I've been switched over to Teams so I can't check.

My company's Slack instance is currently fine.

Slack is working fine for me

I'm impressed but Amazon Chime still appears to be working right now. It's sad because this is the one service that could go down and be a net benefit.

Remember when Facebook went down? Fb, Whatsapp, messenger, Instagram were all down. Don't know what they use internally

You should multi region something like that.