The xDB index contains contact and interaction data, and is updated by the xConnect Search Indexer service.
You can host the xDB index on:
Refer to the Sitecore compatibility table for compatible versions.
The xDB index has its place in the Sitecore reference structure. It can be referenced by other roles, and it can also reference other roles.
The xDB index is referenced by the following roles:
The xDB index does not reference other roles.
Privacy and security
The xDB index handles personal data in the following ways:
Contains personal data if the xConnect Search Indexer has been configured to index facets marked