Amazon's consumer business has completed a database migration effort, turning off its final Oracle database and migrating 75 petabytes of internal data to multiple AWS database services. The migration resulted in a 60% reduction in database costs, 40% reduction in latency, and 70% reduction in administrative overhead. The effort involved over 100 teams and took several years to complete. Amazon's DBAs are now free to focus on higher-value tasks, such as performance monitoring and query optimization.