This morning I had reached the milestone of soft-launching my side-project turned startup, but the first user contacted me to say sign-up was broken. I traced the problem down to AWS Cognito (in us-east-2) returning an error during the sign-up process. Great timing! I called up AWS and they said they want to look into a potential outage causing this first (and that Cognito was having issues in another region) before debugging my stuff.
With Slack down, I'm suspecting AWS is the culprit, but it's difficult to find a good "source of truth" in this situation - last time I checked, the AWS status dashboard was all green. So, anyone else having issues? I'm hoping it gets resolved soon so that my mailing list doesn't get routed to a broken app :(