[kenhwang]

If my company is any indication, they're going to make more money since everyone will simply check the multi-AZ or multi-region checkboxes they didn't before and throw more money at the problem instead of doing proper resiliency engineering themselves.

[gizmodo59]

It doesn’t matter how much of resiliency engineering you do. Having everything in a single AZ is a risk. If this is acceptable then it’s fine if not you need to think of multi az from day 1.

[dogecoinbase]

Auth0 ran in six AZs in two regions[1] and went down today[2], because they picked the wrong two regions. How many regions and AZs should someone pay for before they get reliability?

1: https://auth0.com/blog/auth0-architecture-running-in-multipl... 2: https://twitter.com/auth0/status/1471159935597793290

[brewdad]

At a minimum they should have chosen regions not in the same time zone or general geographic area. US-West 1 and US-West 2 might well be safeguarding against a server failure but is not a disaster plan. If your customers are global, choosing multiple continents is probably prudent.

[Corrado]

Whelp, I guess you're not using Cognito then. It has no user account syncing feature so you can't have a user group in more than one region. Grrrrr!