Atlassian is rearchitecting Jira Cloud to enhance its performance and reliability. By transitioning to a cloud-native, multi-tenant platform, the team aims to improve scalability and address the limitations of the previous architecture. Key changes include optimizing data access patterns and decoupling services for better efficiency.

Atlassian successfully migrated four million Jira databases to AWS Aurora with a focus on minimizing user disruption and enhancing reliability, performance, and cost efficiency. The process involved strategic planning, innovative techniques to manage database loads, and overcoming significant challenges related to database file counts.