Atlassian Bitbucket migration: How they made the move in just 3 months

While Atlassian had migrated most of their services to the cloud, one mammoth challenge remained – moving Bitbucket to the cloud. As one of their flagship products, Bitbucket supports over a billion transactions daily. In the past the company managed data through their data center, which was limiting the scale and security of the service.
Atlassian partnered with Thoughtworks to enable the migration of over 50 million customer code repositories. Adding to the challenge was the fact that the move needed to happen in such a way that produced zero downtime and minimal customer disruption.
Here’s how they did it.