The following content was taken from Atlassian.com

This is the third blog post of a three part series where we focus on migrating the Jira code base from Subversion to Git. We wanted to share Atlassian’s migrating experience to those of you who are contemplating moving a large project to Git – without sacrificing active development. In our first post we discussed why we decided to make the switch to Git. In our second post we dove in the technical details of switching from Subversion to Git. 

The following content was taken from Atlassian.com  

In this the first of a three part blog series which focuses on migrating the Jira code base from Subversion to Git. We wanted to share Atlassian’s migrating experience to those of you who are contemplating moving a large project to Git – without sacrificing active development. In our first post we discuss why we decided to make the switch to Git. In our second post we dive in the technical details of switching from Subversion to Git. In our third, and final post we will discuss how we managed the “human” angle to migrating.