With Sitecore 9.0 and the introduction xConnect you might be wondering what you are going to do with all that analytics data sitting in MongoDB, when you upgrade your Sitecore 8.x instance to Sitecore 9. Well, Sitecore have created a tool called the xDB migration tool. The tool uses the Sitecore Data Exchange Framework 2.0 and it provides the ability to read from MongoDB (source system) and write to the xConnect server (target system). If you are not familiar with the Data Exchange Framework I have covered it in an earlier post.

The xDB migration Tool provides a pre-configured mapping of data from the MongoDB database to the xConnect server in the form of a DEF Tenant. The Tool includes two data migration processes.

1. MongoDB Contacts to xConnect Contacts – Reads contact data and related device and interaction data for each contact – from a MongoDB database and writes it to xConnect.
2. MongoDB Reference Data to xDB – Reads geo IP and location data from a MongoDB database and writes it to xConnect.

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