Moving from the legacy cluster to a regional cluster
Synthflow is retiring the legacy Global cluster. Over the course of Q4 2026, every enterprise workspace still running on it moves to a dedicated regional cluster: US or EU.
This page applies to all enterprise customers currently on the legacy cluster. It covers how your region is chosen, what Synthflow moves for you, and what your team needs to do. Nothing moves without notice.
Choosing your region
Through October, Synthflow emails every enterprise account on the legacy cluster to confirm which region you want to be migrated to.
Synthflow has made an initial assumption for each account based on your environment, and would rather check than guess. If you do not reply, your workspace moves to the US cluster.
Changing region after your migration is a manual migration handled by the professional services team. It is chargeable, and not everything carries across cleanly. If you need the EU, tell Synthflow now rather than after the move.
What you need to do
What is required from your team depends on which cluster you are moving to.
If you are moving to the US cluster
Synthflow expects no action on your side. Your workspace moves for you, including agents, call logs, and actions, and your API base URL keeps working.
Synthflow may ask you to update an IP allowlist later, with plenty of notice.
If you are moving to the EU cluster
There is some work at your end. You need to repoint your API base URL to the EU endpoint, and Synthflow agrees a specific date and time with you to do it so that no data is lost in the switchover.
Synthflow coordinates the whole thing with you directly and gives you plenty of notice, but it is worth knowing now that you need someone technical available on the day.
What moves with you
Everything inside your workspace moves, including agents, prompts, knowledge bases, and call history. For EU migrations, Synthflow runs a final sync immediately before you switch over, so anything you create or change in the run-up comes with you.
Your API keys do not change.
FAQ
Do I have to do anything if I'm staying in the US?
No. Your base URL keeps working. Synthflow may ask you to update an IP allowlist later, with plenty of notice.
Can I have both US and EU?
Not within one workspace. A second region requires a second workspace, provisioned and billed separately.
What happens if I don't reply to the region email?
Your workspace moves to the US cluster. Moving region afterwards is a manual migration handled by the professional services team. It is chargeable and not everything carries across cleanly, so it is worth telling Synthflow now if you need the EU.
Will there be downtime?
US customers: no. EU customers: a short coordinated window during the agreed switchover slot, which Synthflow sizes with you when the migration is scheduled.
Does everything move, including agents, prompts, knowledge bases, and call history?
Yes. For EU migrations, Synthflow runs a final sync immediately before you switch over, so anything you create or change in the run-up comes with you.
Do my API keys change?
No. Your existing API keys keep working after the migration.