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pcx_content_type: concept
title: Customer Metadata Boundary
sidebar:
order: 1
order: 5
---

As part of the Data Localization Suite, the Customer Metadata Boundary (CMB) ensures that Customer Logs — any traffic metadata that can identify a customer’s end user (that is, contains the customer's [Account ID](/fundamentals/account/find-account-and-zone-ids/)) — will stay in the `EU` (European Union) or in the `US` (United States), depending on the region the customer selects. For example, if a customer selects the `EU` Customer Metadata Boundary, metadata will **only** be sent to our core data center located in the European Union.
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