Feature coming soon: Web messaging is currently available as preview in Zurich. In preview, the Web Messaging Guest API is exposed via proxy regions for customer use.
New Genesys Cloud Regions AWS region name for Voice, Channel, Data, and Users Web Messaging Guest API – WebSocket Proxy Preview AWS Region
Zurich EUC2 – Europe (Zurich) EUC1 – Europe (Frankfurt)

The following table shows the AWS regions that correlate to Genesys Cloud Web Messaging availability. 

Genesys Cloud AWS region AWS region name
US East (N. Virginia)
us-east-1
US East 2 (Ohio) us-east-2
US West (Oregon) us-west-2
Canada (Canada Central) ca-central-1
South America (São Paulo) sa-east-1 
Middle East (UAE) me-central-1
EU (Ireland) eu-west-1
EU (Frankfurt) eu-central-1
EU (London) eu-west-2
Asia Pacific (Mumbai) ap-south-1
Asia Pacific (Seoul) ap-northeast-2
Asia Pacific (Sydney) ap-southeast-2
Asia Pacific (Tokyo) ap-northeast-1
Asia Pacific (Osaka) ap-northeast-3