Pantheon Site Regions and Data Residency

Learn how to launch sites in Australia, Canada, or the European Union.

Contributors: Edward Angert, Rachel Whitton, Ari Gold.

Use Cases

There are many scenarios in which you might prefer running a site within an International Region rather than the default US. Common use cases include:

  • Compliance standards that require data residency within the borders of Australia, Canada, or the European Union
  • Improved performance and user experience for authenticated traffic originating near the desired region

Available Regions

Four regions are available when creating a new site:

  • United States (US) (Default)
  • Australia (AU)
  • Canada (CA)
  • European Union (EU)

EU Data Residency

Pantheon sites have all site resources in the region in which it was created. This includes application and database containers, Redis cache servers, Apache Solr index servers, and a distributed filesystem and request router.

Automated and manual backups of all site components (code, database, and files) are stored in the EU and created by job workers also running in the EU. Additionally, any database or file clones between site environments are run by EU job workers.

Localized, EU-specific Disaster Recovery is also available.

With this set of EU-specific resources, now you can run WordPress or Drupal sites on Pantheon and meet the European Union's legal, regulatory, or data sovereignty requirements.

Create a New Site in a New Region

Create a new Site from the Dashboard and select the Region:

Select a Region from the Create Your Pantheon Site screen

Create a New Site in a Specific Region using Terminus

  1. Install and authenticate Terminus. The commands used for International Regions require Terminus 2.0 or newer. If you're already running Terminus, be sure to update to the latest version.
  2. Use Terminus to create a new site associated with your organization and include the --region=eu option.
  • Available regions:
NameCode
Australiaau
Canadaca
European Unioneu
United Statesus

For example (replace my-eu-site-name, My EU Site Name, WordPress and My Organization Name accordingly):

terminus site:create my-eu-site-name "My EU Site Name" "WordPress" --org "My Organization Name" --region eu

"terminus site:create my-eu-site "My

See terminus site:create --help for more information on the options and values used in this command.

Migrate an Existing Site to a New Region

  1. Create a new site (as described above)
  2. Copy over the site's code, database, and files.
  3. Move domains and DNS to the new site.

Professional Services Migration

If you'd like help migrating your site between regions, our Professional Services Migrations team is available.

Review Site Region

Use the Dashboard to see the Pantheon Region in which the site is hosted:

  1. Navigate to the Site Dashboard
  2. Click Settings, then About Site
  3. Region will show either United States by default, or the name of the International Region in which the Site is hosted.

Site Dashboard > Settings > About Site > Region: European Union

You can also get this information via Terminus.

In the following sections, assign $SITE or replace it in each example with your site name or UUID.

Display information for a specific site

terminus site:info $SITE

Display a list of organization sites and their region

terminus site:list --org "My Organization Name" --fields name,region

Verify Domains Route Correctly

Use grep to expose the x-served-by response header or AMS to verify whether the Amsterdam origin shield was used as expected (replace example.com):

curl -Is https://example.com | grep x-served-by
curl -Is https://example.com | grep AMS

The output should look something like:

curl -Is https://dev-rachel-whitton-eu2.pantheonsite.io | grep x-served-by
x-served-by: cache-ams21041-AMS, cache-jfk8127-JFK

Coming Soon

More features are in active development. Contact us to learn more, and check this doc for updates. Fill out this survey to tell us about your needs.

Frequently Asked Questions

Can I move an existing site to a new region?

Yes, however you must migrate your existing site to a new site that was configured for the new region during creation (as described above).

Contact your account owner or our Sales team to learn about Pantheon's migration services or review the relaunch procedure for steps on how to migrate the site yourself.