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What data residency means, how it differs from data sovereignty, and what to ask an AI voice agent vendor about where call data is stored.
Data residency is the geographic location where an organization's data is stored and processed, usually set by a law, a contract, or the organization's own policy. For an AI voice agent, that means call audio, recordings, transcripts, call logs, and anything extracted from a call.
Residency is about where data sits. Sovereignty is about whose laws reach it. Localization is a legal rule that forces it to stay in one country.
| Term | What it means | Example |
|---|---|---|
| Data residency | The region or country where data is stored and processed | A contract states that customer recordings are stored in an EU region |
| Data sovereignty | Data is subject to the laws of the country that holds it, and of any country with legal reach over the provider | The US CLOUD Act requires US providers to disclose data in their possession, custody, or control "regardless of whether" it is located inside or outside the United States |
| Data localization | A law that requires certain data to be stored inside a country | China's Personal Information Protection Law (Article 40) requires critical information infrastructure operators, and handlers above state-set volumes, to store personal information collected in China domestically |
So data a US-based provider stores in a European data center has EU residency but may still fall under US legal process.
GDPR is often mistaken for a localization law. It is not. It allows personal data to leave the European Economic Area as long as safeguards "travel with the data," such as an adequacy decision or standard contractual clauses (SCCs). When a buyer requires in-region storage, ask where that requirement comes from, because GDPR alone does not impose one.
Callers say things nobody asked for, such as a date of birth, a diagnosis, or a card number read aloud, and all of it lands in the recording and the transcript. A call also passes through several systems:
Each step can run with a different provider in a different region, so a residency answer that covers only the database is incomplete.
Get these answers in writing, ideally in the data processing agreement (DPA) or an attached schedule:
If the first answer does not meet your requirement, the options are usually a vendor in your region, an on-premise deployment, or storing less with the vendor. Our enterprise voice AI compliance guide covers how EU procurement teams weigh these.
Retell's docs state that its primary infrastructure is in the US and that Retell does not currently operate services within the European Union. For GDPR, Retell relies on AWS and its GDPR-compliant DPA, and offers its own DPA with EU Standard Contractual Clauses for self-signing, which its docs say is required for processing personal data of EU or UK residents. If EU call data must never leave the EU, raise it with Retell before planning a deployment. The current statement is on Retell's security and compliance page.
You can control what Retell keeps, per agent:
These settings change what is stored and for how long, not where a live call is processed.
For calls that cross borders, see our guide to AI calling laws by country. If you are planning a large deployment with specific data requirements, see Retell's enterprise conversational AI platform and bring your residency questions to the first conversation.