Regions
Regions are the locations where Reflex runs your app. Add regions closer to your users to improve latency and availability.
Manage regions in Reflex Build
- Open Deployments and select the app.
- Open Settings > Regions.
- Select Add new region.
- Choose the region and number of instances, then review the resource change before confirming.
You can remove a region when the app has more than one. Removing it makes the app unavailable in that region.
The table below lists the Reflex Cloud region codes. A connected Google Cloud account uses the region chosen in the organization's Cloud Provider settings.
Region | Country |
|---|---|
ams |  Amsterdam, Netherlands |
arn |  Stockholm, Sweden |
bom |  Mumbai, India |
cdg |  Paris, France |
dfw |  Dallas, Texas (US) |
ewr | Secaucus, NJ (US) |
fra |  Frankfurt, Germany |
gru |  Sao Paulo, Brazil |
iad | Ashburn, Virginia (US) |
jnb |  Johannesburg, South Africa |
lax | Los Angeles, California (US) |
lhr |  London, United Kingdom |
nrt |  Tokyo, Japan |
ord | Chicago, Illinois (US) |
sjc | San Jose, California (US) |
sin |  Singapore, Singapore |
syd |  Sydney, Australia |
yyz |  Toronto, Canada |
Select regions from the CLI
Repeat --region to deploy to more than one Reflex Cloud region:
Apps use sjc by default when no region is configured. The -r short form is also supported. CLI arguments override the corresponding value in cloud.yml or pyproject.toml; see Cloud Configuration File.