Stormpath has a Public API and an Enterprise API, both of which are hosted in AWS US East.
We also have a European Enterprise cloud located in Frankfurt, Germany (AWS's eu-central-1 region). Additionally, we offer private deployments of our API, which are hosted in an AWS region of our customers' preference. For more about our EU cloud or Private Deployments, please contact firstname.lastname@example.org.
For general questions regarding Stormpath infrastructure, please email email@example.com.