When configuring my AWS S3 backups I got confused in the region naming between the AWS console and the dropdown box. AWS used more generic names then the technical ones in the backup setup. I had to google for the reference table.
Code Name
us-east-1 US East (N. Virginia)
us-east-2 US East (Ohio)
us-west-1 US West (N. California)
us-west-2 US West (Oregon)
ca-central-1 Canada (Central)
eu-west-1 EU (Ireland)
eu-central-1 EU (Frankfurt)
eu-west-2 EU (London)
ap-northeast-1 Asia Pacific (Tokyo)
ap-northeast-2 Asia Pacific (Seoul)
ap-southeast-1 Asia Pacific (Singapore)
ap-southeast-2 Asia Pacific (Sydney)
ap-south-1 Asia Pacific (Mumbai)
sa-east-1 South America (São Paulo)