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Migrating Cosmos DB Tables API

Eitan Blumin handles a migration:

A few months ago, I was involved in an interesting project where a large customer (not to be named due to NDA) needed to migrate their entire Azure cloud subscription to another subscription. This was a difficult and arduous process that involved several PaaS technologies, besides SQL Server, that I didn’t have experience with before.

But it presented very interesting challenges and opportunities to learn new things.

One of these was the need to migrate an entire Azure Cosmos DB with Table Storage API account from one subscription to another.

Read on for the challenge, the intermediate solution using the Cosmos DB Data Migration Tool, and Eitan’s Powershell script to automate the process. I know and work with most of the people working on the DMT and they’re good folks.