After 14 months of planning, 3 months of execution, and zero unplanned downtime, our 120-engineer organization migrated 14,287 repositories, 47 CI pipelines, and 12TB of Git LFS data from Atlassian Bitbucket 8.0 to GitHub 2026 Enterprise Cloud, cutting monthly CI spend by 42%, reducing merge request latency by 67%, and eliminating 18 hours of weekly manual repo maintenance work. We didn’t just move code: we rebuilt our entire developer experience stack, and here’s every number, every script, and every mistake we made along the way. 📡 Hacker News Top Stories Right Now US healthcare marketplaces shared citizenship and race data with ad tech giants (133 points) Securing a DoD Contractor: Finding a Multi-Tenant Authorization Vulnerability (71 points) I am worried about Bun (140 points) Stop big tech from making users behave in ways they don't want to (79 points) Days Without GitHub Incidents (243 points) Key Insights 14,287 repositories migrated with 99.992% data integrity (2 corrupted LFS files caught…