I was confused by references to "the US East region" used interchangeably with us-east-1. I am sure the instructor is aware there are currently two US East regions (N. Virginia and Ohio). (Maybe this wasn’t the case when the video was recorded?) It seems only one of the two US East Regions is an acceptable choice.
From https://docs.aws.amazon.com/acm/latest/userguide/import-certificate.html it appears " you must import it into the US East (N. Virginia) region" us-east-1 and US East (Ohio) us-east-2 is not supported.
Yeah there are 2 us east regions now, but when talking with people we still default to N. Virginia as us-east region, and specify Ohio explicitly.
Yes it’s all about us-east-1, this was the very first region that AWS launched and usually, when they launch a new service us-east-1 is the first place they make it available. So it’s a pretty special region. There are also certain services which have their endpoint for programmatic access only in us-east-1 (including CloudFront)….so if in doubt, us-east-1 is a good guess.
I’ve updated the lecture to avoid any confusion!